快、慢两车分别从相距
的佳市、哈市两地出发,匀速行驶,先相向而行,慢车在快车出发
后出发,到达佳市后停止行驶;快车到达哈市后,立即按原路原速返回佳市(快车掉头的时间忽略不计).快、慢两车距哈市的路程
(单位:
),
(单位:
)与快车出发时间
(单位:
)之间的函数图象如图所示,请结合图象信息解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/2147a817-db91-4158-99da-495c01558301.png?resizew=204)
(1)直接写出慢车的行驶速度和
的值;
(2)快车与慢车第一次相遇时,距离佳市的路程是多少千米?
(3)快车出发多少小时两车相距
?请直接写出答案.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66732f377099e7d99437289f1edbeaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b29f60fc3d32ca94740f0adf3fd0b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933311c0c090e1138e4dd388b7adf8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/2147a817-db91-4158-99da-495c01558301.png?resizew=204)
(1)直接写出慢车的行驶速度和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)快车与慢车第一次相遇时,距离佳市的路程是多少千米?
(3)快车出发多少小时两车相距
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5a1095f11a367fc0bfdd114211fab3.png)
更新时间:2022-08-01 22:10:45
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】在平面直角坐标系
中,对于点
,
,
,
,记
,
,将
称为点
,
的横纵偏差,记为
,即
.若点
在线段
上,将
的最大值称为线段
关于点
的横纵偏差,记为
.
(1)
,
,
①
的值是 ;
②点
在
轴上,若
,则点
的坐标是 .
(2)点
,
在
轴上,点
在点
的上方,
,点
的坐标为
.
①当点
的坐标为
时,求
的值;
②当线段
在
轴上运动时,直接写出
的最小值及此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a54e0b4872cabdc0b07ea9380e4de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a350eb41c3b7e4face9c3299eff9d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8e72f73db207c3040f143d837d5995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24529eadaef974ec0625f8ca40682e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257a8122b180c29a64e9f93363f9988a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0764a3d97075146a595fdc79d6a4f39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40283fd0ed30d5303c5b96f5fefa3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd3f2f6bd8f2954001a2c909f63984c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e994beebea4cc647bc31b7fcd6aa8dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd3f2f6bd8f2954001a2c909f63984c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044d6702bccf365a802cfe1a82dca705.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e10de2c38bc918ae9e1ce62a5c70099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f958666546017890e0c80e28a1362dfd.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd3f2f6bd8f2954001a2c909f63984c.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d811a3199c82b34cf902820213cc14ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5886d4b31a8d7249d3eea076d1f40354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7926cb5edef9dc7d29453e9304fc2f.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0ed4770b3aeaf388620386582237ce.png)
②当线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0ed4770b3aeaf388620386582237ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】(材料阅读)数轴是数学学习的一个很重要的工具,利用数轴可以将数与形完美结合.通过数轴我们可发现许多重要的规律:
①绝对值的几何意义:一般地,若点A、点B在数轴上表示的有理数分别为a,b,那么A、B两点之间的距离表示为|a﹣b|,记作AB=|a﹣b|,|3﹣1|则表示数3和1在数轴上对应的两点之间的距离;又如|3+1|=|3﹣(﹣1)|,所以|3+1|表示数3和﹣1在数轴上对应的两点之间的距离;
②若数轴上点A、点B表示的数分别为a、b,那么线段AB的中点M表示的数为
.
(问题情境)如图,在数轴上,点A表示的数为﹣20,点B在原点右侧,表示的数为b,动点P从点A出发以每秒2个单位长度的速度沿数轴正方向运动,同时,动点Q从点B出发以每秒3个单位长度的速度沿数轴负方向运动,其中线段PQ的中点记作点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/7e7b60df-4ddb-45c7-88d5-c47cb782b9e9.png?resizew=498)
(1)出发12秒后,点P和点Q相遇,则B表示的数b=_____;
(2)在第(1)问的基础上,当
时,求运动时间;
(3)在第(1)问的基础上,点P、Q在相遇后继续以原来的速度在这条数轴上运动,但P、Q两点运动的方向相同.随着点P、Q的运动,线段PQ的中点M也相应移动,问线段PQ的中点M能否与表示﹣2的点重合?若能,求出从P、Q相遇起经过的运动时间;若不能,请说明理由.
①绝对值的几何意义:一般地,若点A、点B在数轴上表示的有理数分别为a,b,那么A、B两点之间的距离表示为|a﹣b|,记作AB=|a﹣b|,|3﹣1|则表示数3和1在数轴上对应的两点之间的距离;又如|3+1|=|3﹣(﹣1)|,所以|3+1|表示数3和﹣1在数轴上对应的两点之间的距离;
②若数轴上点A、点B表示的数分别为a、b,那么线段AB的中点M表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f89a8b5cf6996a6455375e405bfb9d.png)
(问题情境)如图,在数轴上,点A表示的数为﹣20,点B在原点右侧,表示的数为b,动点P从点A出发以每秒2个单位长度的速度沿数轴正方向运动,同时,动点Q从点B出发以每秒3个单位长度的速度沿数轴负方向运动,其中线段PQ的中点记作点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/7e7b60df-4ddb-45c7-88d5-c47cb782b9e9.png?resizew=498)
(1)出发12秒后,点P和点Q相遇,则B表示的数b=_____;
(2)在第(1)问的基础上,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0c5270bef217fe265c807d820ec527.png)
(3)在第(1)问的基础上,点P、Q在相遇后继续以原来的速度在这条数轴上运动,但P、Q两点运动的方向相同.随着点P、Q的运动,线段PQ的中点M也相应移动,问线段PQ的中点M能否与表示﹣2的点重合?若能,求出从P、Q相遇起经过的运动时间;若不能,请说明理由.
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【推荐3】对于数轴上的
三点,给出如下定义:若其中一个点与其它两个点的距离恰好满足2倍的数量关系,则称该点是其它两个点的“祁美点”.
例如:数轴上点
所表示的数分别为1,3,4,此时点
是点
的“祁美点”.
(1)若点
表示数
,点
表示数
,点
是点
,
的“祁美点”,点
在
,
之间,且表示一个负数,则点
表示的数为______;
(2)若点
表示数
,点
表示数
,下列各数-1,0,1所对应的点分别为
,则点
的“祁美点”是 (填
或
或
)
(3)点
表示数
,点
表示的数
,
在为数轴上一个动点:
①若点
在点
的左侧,且点
是点
的“祁美点”,则此时点
表示的数是多少?
②若点
在点
的右侧,点
中,有一个点恰好是其它两个点的“祁美点”,则此时点
表示的数是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff76846660a607dae65b956967b4c2f4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/9e044694-bcbe-4aaf-a8a9-dfdac97e74e4.png?resizew=220)
例如:数轴上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff76846660a607dae65b956967b4c2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b00c9499415c5801c64a8177f4b35e6.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c537a5a0b3cb5e9f1f1cfe97b60b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c33c8b0bb57a61e9faef1c866ef3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐1】快车和慢车分别从甲、乙两地同时出发,匀速相向而行,快车到达乙地后,慢车继续前行,设出发
小时后,两车相距
千米,图中折线表示从两车出发至慢车到达甲地的过程中
与
之间的函数关系式,根据图中信息,解答下列问题.
(1)甲、乙两地相距 千米,快车从甲地到乙地所用的时间是 小时;
(2)求线段
的函数解析式(写出自变量取值范围),并说明点
的实际意义.
(3)求快车和慢车的速度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9af8c3fbdb748fd11e2423de063616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2db885ad7da56625153d3bceafdb507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2db885ad7da56625153d3bceafdb507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9af8c3fbdb748fd11e2423de063616.png)
(1)甲、乙两地相距 千米,快车从甲地到乙地所用的时间是 小时;
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6312c1b1ecc7cd8dd9c7fd5b603b47f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c123204222ccd33946d5613378624d6.png)
(3)求快车和慢车的速度.
![](https://img.xkw.com/dksih/QBM/2019/6/16/2226889314279424/2228505332662272/STEM/ad3ff51ac77e4a47ac0a9bf1437b50b3.png?resizew=260)
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【推荐2】A,B,C三地在同一条公路上,C地在A,B两地之间,且到A,B两地的路程相等.甲、乙两车分别从A,B两地出发,匀速行驶.甲车到达C地并停留1小时后以原速继续前往B地,到达B地后立即调头(调头时间忽略不计),并按原路原速返回C地停止行驶,乙车经C地到达A地停止行驶.在两车行驶的过程中,甲、乙两车距C地的路程y(单位:千米)与所用的时间x(单位:小时)之间的函数图象如图所示,请结合图象信息解答下列问题:
(1)直接写出A,B两地的路程和甲车的速度;
(2)求乙车从C地到A地的过程中y与x的函数关系式(不用写自变量的取值范围);
(3)出发后几小时,两车在途中距C地的路程之和为180千米?请直接写出答案.
(1)直接写出A,B两地的路程和甲车的速度;
(2)求乙车从C地到A地的过程中y与x的函数关系式(不用写自变量的取值范围);
(3)出发后几小时,两车在途中距C地的路程之和为180千米?请直接写出答案.
![](https://img.xkw.com/dksih/QBM/2021/7/14/2763864723087360/2770580878942208/STEM/2a2f58a0b329428e831887434b4d7d08.png?resizew=299)
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【推荐3】探究函数性质时,我们经历了列表、描点、连线画出函数图象,观察分析图象特征,概括函数性质的过程.结合已有经验,请画出函数
的图象,并探究该函数性质.
(1)绘制函数图象
①列表:下列是x与y的几组对应值,其中
___________,
____________.
②描点:请根据表中所给的数值在图中描点;
③连线:请结合反比例函数图象的特征,画出函数图象;
①当
时,函数值y随着自变量x的增大而______________;(填“减小”或“增大”)
②函数的图象关于___________对称;
(3)运用函数图象及性质
①点
,
,
在函数图象上,请比较
,
,
的大小( )
A.
B.
C.
D.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83d790248a1aba9266fb9003cf0972d.png)
②点
,
在函数图象上,请比较
,
的大小( )
A.
B.
C.
D.不确定
③写出方程
的解_____________;
④写出不等式
的解集___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c985cc24fa29287daf84ce9861dabb.png)
(1)绘制函数图象
①列表:下列是x与y的几组对应值,其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![]() | …… | -5 | -4 | -3 | -2 | -1 | 1 | 2 | 3 | 4 | 5 | …… |
![]() | …… | -3.8 | -2.5 | -1 | 1 | 5 | 5 | ![]() | -1 | ![]() | -3.8 | …… |
③连线:请结合反比例函数图象的特征,画出函数图象;
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
②函数的图象关于___________对称;
(3)运用函数图象及性质
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0db827919b39706f996ae9d5e4b4b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62813c93d59bf67fc00bd69b6c439ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05c4458fbdca1f4512ab537bcbdd2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b44c63a912c9f07b80fb8f5bdde7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4557a97a17857a08aeb0a39489f10b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da51248832d1ef41e0577d630969783d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83d790248a1aba9266fb9003cf0972d.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1310445f6dd61d45ef154078adc250be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c7d6ad995d9fcec91ea69306eb2e3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f333263260646c494225db8a7476c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
③写出方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e8199c061c1cb8ef1680e2995bc3aa.png)
④写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c691fb137faf605c58bd2c2519920d1.png)
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【推荐1】如图,一次函数
的图象与反比例函数
的图象相交于点
和点
,直线
与
轴交于点
.
(1)求反比例函数
的解析式和点
的坐标;
(2)①直接写出当
时,
的取值范围;
②连接
和
,求
的面积;
(3)点
为线段
(不含端点)上一动点,过点
作
轴交反比例函数于点
,点
为线段
的中点,点
为
轴上一点,点
为平面内一点,当
,
,
,
四点构成的四边形为正方形时,写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60bcb78e8af46f8c065b952a47aec14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db8dc0564b187f7adb8184f714ab5da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5132a350f40fa8203f9a1a64170f24e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/91a42082-56ed-45c0-a1ac-d845f6325a91.png?resizew=195)
(1)求反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)①直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1113e9b568fb9ca3286582368e257a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2784a52c4da98dc9df661fc152fc29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】如图,直线
与双曲线
交于
,
两点,点
的坐标为
,点
是双曲线第一象限分支上的一点,连接
并延长交
轴于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/fc848afc-8a88-4de5-a253-4cace5ae8e17.png?resizew=372)
(1)求
的值并直接写出点
的坐标;
(2)连接OC,求△OBC的面积;
(3)点
是
轴上的动点,连接
,
,求
的最小值;
(4)直接写出反比例函数值大于正比例函数值的x的取值范围 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02430f83e4f662e788d234da3c56ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d49d34012ddf68fb981eb4975ac99b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3ecd658bde741329d7d2a95c17fdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/510634e49198fc429d942d00fa5446ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/fc848afc-8a88-4de5-a253-4cace5ae8e17.png?resizew=372)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)连接OC,求△OBC的面积;
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4083c581c6027c4b2ae7e3b3749f485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e5f736b1195fef1d2d300168a795f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683f81d1f487d8dd6d965f11fb1bd8fb.png)
(4)直接写出反比例函数值大于正比例函数值的x的取值范围 .
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【推荐1】滴滴快车”是一种便捷的出行工具,计价规则如下表:
![](https://img.xkw.com/dksih/QBM/2018/8/1/2001281399275520/2004620605440000/STEM/674988e8e2e64679a205fcd618c94337.png?resizew=554)
随着互联网的不断发展,更多的人们选择了“滴滴快车”出行.假设“滴滴快车”的平均行车速度为50 km/h,请回答下列问题:
(1)小明和小冰各自乘坐“滴滴快车”,行车里程分别为3千米和10千米,请问他们各自需付车费多少钱?
(2)张老师与王老师的家和学校在同一条直线上,位置如图所示.一天,张老师和王老师各自从学校“滴滴快车”回家,分别付车费9.6元和24元.请问,张老师和王老师的家相距多少千米?
![](https://img.xkw.com/dksih/QBM/2018/8/1/2001281399275520/2004620605440000/STEM/674988e8e2e64679a205fcd618c94337.png?resizew=554)
随着互联网的不断发展,更多的人们选择了“滴滴快车”出行.假设“滴滴快车”的平均行车速度为50 km/h,请回答下列问题:
(1)小明和小冰各自乘坐“滴滴快车”,行车里程分别为3千米和10千米,请问他们各自需付车费多少钱?
(2)张老师与王老师的家和学校在同一条直线上,位置如图所示.一天,张老师和王老师各自从学校“滴滴快车”回家,分别付车费9.6元和24元.请问,张老师和王老师的家相距多少千米?
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【推荐2】如图1,A,B,C为三个超市.在A通往C的道路(粗实线部分)上有一D点,D与B有道路(细实线部分)相通这.A与D,D与C,D与B之间的路程分别为25㎞,10㎞,5㎞.现计划在A通往C的道路上建一个配货中心H,每天有一辆货车只为这三个超市送货.该货车每于从H出发,单独为A送货1次,为B送货1次,为C送货2次.货车每次仅能给一家超市送货,每次送货后均返回配货中心H.设H到A的路程为
㎞,这辆货车每天行驶的路程为
㎞.
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/7f7ba6c5317e4bcfbebc69c8c1ba456f.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/66c77448482d4db798b8212912a2480c.png)
(1)用含
的代数式填空:当0≤
≤25时货车从H到A往返1次的路程为2
㎞,货车从H到B往返1次的路程为 ㎞;货车从H到C往返2次的路程为 ㎞;这辆货车每天行驶的路程
= ;当25<
≤35时,这辆货车每天行驶的路程
= ;
(2)请在图2中画出
与
(0≤
≤35)的函数图象;
(3)配货中心H建在哪段,这辆货车每天行驶的路程最短?
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/b36d09ea61b74187803493e9b8f18a34.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/7f7ba6c5317e4bcfbebc69c8c1ba456f.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/66c77448482d4db798b8212912a2480c.png)
(1)用含
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/b36d09ea61b74187803493e9b8f18a34.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/b36d09ea61b74187803493e9b8f18a34.png)
(2)请在图2中画出
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/b36d09ea61b74187803493e9b8f18a34.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/27/1573645645086720/1573645650821120/STEM/4ec44e80267e4b2a880976acd430256e.png)
(3)配货中心H建在哪段,这辆货车每天行驶的路程最短?
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【推荐3】有一科技小组进行了机器人行走性能试验,在试验场地有A、B、C三点顺次在同一笔直的赛道上,甲、乙两机器人分别从A、B两点同时同向出发,历时7分钟同时到达C点,乙机器人始终以60米/分钟的速度行走,如图是甲、乙两机器人之间的距离y(米)与他们的行走时间x(分钟)之间的函数图象,请结合图象,回答下列问题:
(1)A、B两点之间的距离是______米,甲机器人前2分钟的速度是______米/分钟;
(2)已知线段
轴,前3分钟甲机器人的速度不变.
①求甲机器人在3~4分钟的这段时间的速度是多少米/分?
②请直接写出在整个运动过程中,两机器人相距28m时x的值______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/31/3c196c6f-da2d-4440-a1e8-5ad6aa4a81a6.png?resizew=251)
(1)A、B两点之间的距离是______米,甲机器人前2分钟的速度是______米/分钟;
(2)已知线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2fae8c63eb2c66b8285fae751706da.png)
①求甲机器人在3~4分钟的这段时间的速度是多少米/分?
②请直接写出在整个运动过程中,两机器人相距28m时x的值______.
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