如图,关于x的一次函数y=k1x+b的图象与反比例函数y=
的图象相交于A(﹣2,8),B(4,m)两点.
(1)求一次函数与反比例函数的解析式.
(2)设一次函数y=k1x+b的图象与x轴,y轴的交点分别为M,N,P是x轴上一动点,当以P,M,N三点为顶点的三角形是等腰三角形时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5201c1cd883298d028ce37904782797.png)
(1)求一次函数与反比例函数的解析式.
(2)设一次函数y=k1x+b的图象与x轴,y轴的交点分别为M,N,P是x轴上一动点,当以P,M,N三点为顶点的三角形是等腰三角形时,求点P的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/6b527ec5-b7e9-45aa-8d13-e89fceb00b81.jpg?resizew=119)
2020·河南·一模 查看更多[3]
更新时间:2020-04-13 14:04:11
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解答题-计算题
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【推荐1】已知甲,乙两地相距
km,一辆轿车从甲地出发前往乙地,到达乙地后立即按原路原速返回甲地.一辆货车与轿车同时出发,以
km/h的速度沿同一条公路从乙地前往甲地,途经服务区时货车停车装货耗时
分钟.待装货完毕,货车立即调整车速继续匀速前往甲地,最后与轿车同时到达甲地.如图是两车离乙地的距离
(km)与货车行驶时间
(h)之间的函数图象,结合图象回答下列问题:
![](https://img.xkw.com/dksih/QBM/2024/1/24/3417974659268608/3436675388801024/STEM/7108d0a2418a41a5b845f3e037f09a8b.png?resizew=206)
(1)轿车的速度是______km/h,
______;
(2)在图中补全货车行驶过程的函数图象.
(3)在装货完毕后,货车与轿车何时相距
km?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9db58aa1e9c1383f0729461fa2fcde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f959e5f8d89390f0f136f6acc9f6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53c7539ed297ea63b9ace6f5cc58ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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![](https://img.xkw.com/dksih/QBM/2024/1/24/3417974659268608/3436675388801024/STEM/7108d0a2418a41a5b845f3e037f09a8b.png?resizew=206)
(1)轿车的速度是______km/h,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
(2)在图中补全货车行驶过程的函数图象.
(3)在装货完毕后,货车与轿车何时相距
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【推荐2】甲、乙、丙三地顺次在一条公路上,一辆客车和一辆货车分别在甲、丙两地同时出发,客车从甲地出发匀速驶往丙地,中途在乙地停留了2小时,然后以原速行驶到达丙地,货车从丙地出发匀速行驶,直接到达甲地.两车距离乙地的路程y(单位:千米)与行驶时间
(单位:小时)之间的函数关系如图所示.
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(1)求出客车和货车的速度;
(2)求客车从甲地驶向丙地的过程中y与x之间的函数关系式;
(3)求两车在行驶途中何时相遇;
(4)直接写出两车在行驶途中何时相距100千米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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(1)求出客车和货车的速度;
(2)求客车从甲地驶向丙地的过程中y与x之间的函数关系式;
(3)求两车在行驶途中何时相遇;
(4)直接写出两车在行驶途中何时相距100千米.
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【推荐1】如图,点A,点B是直线y=x+2上的两动点,点A在点B左侧,且
,反比例函数
与
分别过点A、点B.
![](https://img.xkw.com/dksih/QBM/2022/3/18/2938880822272000/2955240810962944/STEM/d345cc1b-1cb7-4555-b6fe-7ae27596fc13.png?resizew=358)
(1)若A的坐标为
,求
和
的值.
(2)点A的横坐标记为a,当a=0时我们发现,点A落在y轴上,反比例函数
不存在,所以
.参照上述过程,请直接写出a不能取的其他值.
(3)若
,求点A的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cec401b13d837b0cc8040d15a7a37f.png)
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![](https://img.xkw.com/dksih/QBM/2022/3/18/2938880822272000/2955240810962944/STEM/d345cc1b-1cb7-4555-b6fe-7ae27596fc13.png?resizew=358)
(1)若A的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(2)点A的横坐标记为a,当a=0时我们发现,点A落在y轴上,反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cec401b13d837b0cc8040d15a7a37f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1c188879eadf53a7f5726312dc77722.png)
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解答题-作图题
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【推荐2】如图,在平面直角坐标系第一象限中,当
,
为正整数时:
将反比例函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bf062b2a95d497266653d89e1ddc5f.png)
图象上横坐标为
的点叫做“双曲格点”,记作
,例如,点
表示
图象上横坐标为
的点,故点
的坐标为
.把
的图象沿着
轴平移或以平行于
轴的直线为对称轴进行翻折,将得到的函数图象叫做它的“派生曲线”,例如,图中的曲线
是
图象的一条“派生曲线”.
(1)①“双曲格点”
的坐标为 ;
②若线段
的长为
,则
.
(2)若“双曲格点”
,
的纵坐标之和为
,求线段
的长;
(3)图中的曲线
是
图象的一条“派生曲线”,且经过点
,则
的函数表达式为
;
(4)已知
图象的“派生曲线”
经过“双曲格点”
,且不与
的图象重合,试在图中画出
的位置(先描点,再连线)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/b5dd575c-e1e2-44a4-b935-56de21510f31.png?resizew=483)
将反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bf062b2a95d497266653d89e1ddc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96ef70cbbce3e94f422654956292df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8d04ab33029cf134f1d0f5afd6dd9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42e5f07b11cead9ff087f4846f17b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b217ba00999be01cf88d67086c0d993.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42e5f07b11cead9ff087f4846f17b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f279e1554a3e09a68804a8573a01f0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a9540f8002050fc5dc42fe22c1af76.png)
(1)①“双曲格点”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8319080fce8f3994650da87c2ca347ad.png)
②若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df87abf1da5764875d493927c644c2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ff01f54e97b5d85b34907ea1da5754.png)
(2)若“双曲格点”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ddc5b182d1995db4a5aac25d7b2f505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cef07ce293a6df7059073e514790df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe4dc0d4a0880e819bfb4fa57dabbf3.png)
(3)图中的曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a9540f8002050fc5dc42fe22c1af76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672daf5fc577f89dba06bc35d8767888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6898d181faf9e6cc9957f3102f8d3d73.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3550265b0691196eb02956b2016ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d785ada5ac2562369962f94f68293e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3550265b0691196eb02956b2016ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
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解答题-问答题
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【推荐1】如图,正比例函数
与反比例函数
的图像交于A,B两点,过点A作AC⊥x轴,垂足为C,△ACO的面积为4.
(1)求反比例函数的表达式;
(2)点B的坐标为 ;
(3)当
时,直接写出x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1296adc61245e73f5e89b02f1f8dd1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f7cd75674f6c4cadb64e59cbebcc94.png)
(1)求反比例函数的表达式;
(2)点B的坐标为 ;
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d355a7e96d5226bc1f029e382d83bae3.png)
![](https://img.xkw.com/dksih/QBM/2019/8/5/2262324521312256/2262414093959168/STEM/755e2a55c411433c99f77785e8a12cae.png?resizew=168)
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解答题-证明题
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【推荐2】如图,四边形
是边长为8的正方形,反比例函数
的图象过
上一点E,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/bbe7fbd5-1281-40d2-af3a-345346b9698f.png?resizew=149)
(1)求k的值.
(2)反比例函数的图象与线段
交于点D,直线
过点D及线段
的中点F,探究直线
与直线
的位置关系,并证明.
(3)点P是直线
上一点,当
的值最小时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/bbe7fbd5-1281-40d2-af3a-345346b9698f.png?resizew=149)
(1)求k的值.
(2)反比例函数的图象与线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(3)点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660fccef2bb6651fecb9be00a0634f74.png)
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【推荐1】如图,
中,
,点D是斜边AB上一点,
为
的外接圆,BC交
于点F,连结FD并延长至点E,使
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/93e3c873-53b8-445f-906e-f6c7bad0ebbe.png?resizew=148)
(1)当
时,求
的度数;
(2)若
,当
为等腰三角形时,求CF的长;
(3)设
,若
的外心I恰好落在
上,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e932b4add3175358f15be0e1f7104e79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/93e3c873-53b8-445f-906e-f6c7bad0ebbe.png?resizew=148)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39756e292476709bdc3daef9af9a7e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34868b311f1082fb003dec7f07cdfd2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147f11b5ddcfd1b572dc2943e97dcfca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c026f898601d9fac3a43a02ec014b90c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-作图题
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名校
【推荐2】已知:如图,
,
是过点A的直线,
,
于点B.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/b6c71862-d646-42d8-80e2-dc9b693e7127.png?resizew=509)
(1)在图1中,过点C作
,与直线
于点E,
①依题意补全图形;
②求证:
是等腰直角三角形;
③图1中,线段
、
、
满足的数量关系是
(2)当
绕A旋转到如图(2)和图(3)两个位置时,其它条件不变,在图2中,线段
、
、
满足的数量关系是 ;在图3中,线段
、
、
满足的数量关系是 .
(3)
在绕点A旋转过程中,当
,
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d69c69c46ac34f560546c22af120be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba0db442bddfa899bc89e15459e58e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790334e76b2e5629e4f70052d62195f1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/b6c71862-d646-42d8-80e2-dc9b693e7127.png?resizew=509)
(1)在图1中,过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586321b611a4339f52d293f4bf30b008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
①依题意补全图形;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
③图1中,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
(2)当
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(3)
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您最近一年使用:0次
解答题-证明题
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较难
(0.4)
【推荐3】在平面直角坐标系中,点O为坐标原点,△OAB为等边三角形,点B的坐标为(6,0),点A在第一象限,点P从点A出发沿线段AB以每秒2个单位长度的速度向点B运动,同时点Q从点O出发以相同的速度沿x轴负方向运动,当点P停止运动时,点Q也停止运动.连接PQ,交OA于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/2590e965-c8a5-4de8-ac30-c3546fc82fd4.png?resizew=404)
(1)设点P、Q的运动时间为t秒(0<t<3),AD=m,用含t的式子表示m;
(2)t为何值时,∠OQP=30°?
(3)在(2)的条件下,点A关于PQ对称的点为点E,连接DE,求证:DE∥OB.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/2590e965-c8a5-4de8-ac30-c3546fc82fd4.png?resizew=404)
(1)设点P、Q的运动时间为t秒(0<t<3),AD=m,用含t的式子表示m;
(2)t为何值时,∠OQP=30°?
(3)在(2)的条件下,点A关于PQ对称的点为点E,连接DE,求证:DE∥OB.
您最近一年使用:0次