如图,在平面直角坐标系中,一次函数
的图象交
轴于点
,交
轴于点
.直线
与
轴交于点
,与直线
交于点
.点
是线段
上的一个动点(点
不与点
重合),过点
作
轴的垂线交直线
于点
.设点
的横坐标为
.
的值和直线
的函数表达式;
(2)以线段
,
为邻边作
,直线
与
轴交于点
.
①当
时,设线段
的长度为
,求
与
之间的关系式;
②连接
,
,当
的面积为3时,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fd1ce0df99890a2147191d6fe8961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa720a7e0ebf712019dddf533c3253c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875a74cb44ad8f6166320c792e06dabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8b9ecfed8c73c757e199a360ac698d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350e954f629c1901a5cec03558319e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33fc3a05bb1ac7f535d0e9610bdc6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831c4fbec375b0bfc8258ed9b1a81ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2024-05-16 11:25:10
|
相似题推荐
解答题-问答题
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【推荐1】先阅读下列解题过程,然后回答问题.
解方程:
.
解:当
时,原方程可化为
,解得
;
当
时,原方程可化为
,解得
.
原方程的解是
或
.
根据上面的解题过程,解方程:
.
解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3dabedd42616373a39bbe514c86798.png)
解:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca61056db7aa52c3b898449e169dcbb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12f4f821f1e1951087c5d83dcf8bf4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1e5c336507bef7fcea50342a1c2073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09424b562307fbb26dbdc06ba4b39935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b576cc586b9c86e2c13a803e71f16f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b8d3f7a166ff5db92d9ee0014a960d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b576cc586b9c86e2c13a803e71f16f6.png)
根据上面的解题过程,解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102e608364254f2ae85fd1c23a0afebe.png)
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【推荐2】定义:已知三个互不相等的实数a、b、c,若满足任意两数之差的绝对值中有两个相等,则称a、b、c为“幸福三数组”;
(1)以下三组数中为“幸福三数组”的有 ;
①
、1、2;②3、
、 5;③5、 2、
;
(2)实数a与二元一次方程组
的解构成“幸福三数组”,求a的值;
(3)已知数轴上三点A、B、C所对应的数分别为x、m、n为“幸福三数组”,且
(
为正整数),若关于x的一元一次方程
的解为整数,求m的所有可能的值.
(1)以下三组数中为“幸福三数组”的有 ;
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(2)实数a与二元一次方程组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa45490d078bb051fd15fe78bdb471d7.png)
(3)已知数轴上三点A、B、C所对应的数分别为x、m、n为“幸福三数组”,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca0b545319dd474187b97021da1230b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748f67845a97b2158482165d0a063446.png)
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【推荐3】在数轴上点A表示数a,点B表示数b,点C表示c,且a,c满足|a+2|+(c-6)2=0,通常我们把数轴上两点间距离用表示两点的大写字母表示,比如,点A与点C之间的距离记作AC=|a-c|.
(1)a=____,c=____.
(2)若AB=
BC,则b=_____.
(3)若点B在点A和点C之间,且AB=
BC
①动点P以每秒2个单位长度的速度从点A出发向右运动,同时点Q以每秒1个单位长度的速度从点B 出发向右运动,求经过几秒点P、点Q到点C的距离相等?
②若点D是数轴上一点,点D表示的数是x,是否存在x,使得|x-6|+|x+2|=12?如果存在,直接写出x的值,如果不存在,请说明理由.
(1)a=____,c=____.
(2)若AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
(3)若点B在点A和点C之间,且AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
①动点P以每秒2个单位长度的速度从点A出发向右运动,同时点Q以每秒1个单位长度的速度从点B 出发向右运动,求经过几秒点P、点Q到点C的距离相等?
②若点D是数轴上一点,点D表示的数是x,是否存在x,使得|x-6|+|x+2|=12?如果存在,直接写出x的值,如果不存在,请说明理由.
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【推荐1】如图,已知反比例函数
与正比例函数
的图象交于
,B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/18662b5a-5a1f-4ac6-9b21-95725e63c5f1.png?resizew=235)
(1)求该反比例函数的表达式.
(2)当
时,请结合图象直接写出x的取值范围.
(3)若点Q在x轴上,点P在双曲线上,当A,B,P,Q为顶点的四边形是平行四边形时,求此时点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bd7e92dae1e0c2af6c33d5e202f544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5343f6dee6d12906b09ff03166350a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/18662b5a-5a1f-4ac6-9b21-95725e63c5f1.png?resizew=235)
(1)求该反比例函数的表达式.
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b440596d07c966fc8c024b9418171c.png)
(3)若点Q在x轴上,点P在双曲线上,当A,B,P,Q为顶点的四边形是平行四边形时,求此时点P的坐标.
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【推荐2】如图,平面直角坐标系中,已知直线
上一点
,
为
轴上一点,连接
,线段
绕点
顺时针旋转
至线段
,过点
作直线
轴,垂足为
,直线
与直线
交于点
,且
,连接
,直线
与直线
交于点
,
![](https://img.xkw.com/dksih/QBM/2023/1/9/3149221313134592/3153522879963136/STEM/86fc7967fda34647a062e5bd7c56612d.png?resizew=171)
求:
(1)求点
的坐标;
(2)求点
的坐标;
(3)求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797c488729678e74e0825c2e92b544b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24624dffd30b66a5e4de57362b32b2a3.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/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d6ceed6e5a36193bcb5a557853dbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/2023/1/9/3149221313134592/3153522879963136/STEM/86fc7967fda34647a062e5bd7c56612d.png?resizew=171)
求:
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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解答题-作图题
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【推荐1】如图,
在平面直角坐标系内,三个顶点的坐标分别为
,
,
(正方形网格中,每个小正方形的边长为1),以点
为位似中心,把
按相似比2:1放大,得到对应
.
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980802610274304/2984290803679232/STEM/2f46915b-3b8d-45a5-b23a-66a22ca24f03.png?resizew=282)
(1)请在第一象限内画出
;
(2)若以点
、
、
、
为顶点的四边形是平行四边形,请直接写出满足条件的点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1cc9d1202fe6c28c233132af07d95d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744a0a03867204c8f711f01b85b3251d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fce944e30f49291d812e1a635ae0a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980802610274304/2984290803679232/STEM/2f46915b-3b8d-45a5-b23a-66a22ca24f03.png?resizew=282)
(1)请在第一象限内画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)若以点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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【推荐2】如图,在平行四边形
中,
,E、F分别为边
的中点,连接
.
是菱形;
(2)若
,
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c6c818df102a83ce5159e3208d01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28d2790a97390935125aa897417f970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e825678030322bf7eb2f0249bf28ae25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
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【推荐1】如图,在正方形
中,
,点M在
上,且
,动点P从点M出发,以每秒3个单位的速度沿折线
运动,同时,动点Q从点B出发,以每秒5个单位的速度在B、C之间往返运动,当点P到达终点D时,另一个点也随之停止运动.记点P运动的时间为t(单位:s).
(1)当点P在
上运动,且Q由
运动时,若
,求t的值;
(2)在运动过程中,连接
,记D、P、M、Q围成的图形面积为S,直接写出S与t的关系式,并写出t的取值范围;
(3)在运动过程中,是否存在某个时刻,使点B、D、P围成的三角形与点B、D、Q围成的三角形全等,若存在请直接写出t的值,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdf82f2b3ac77ee7b9b35aebe0dd83f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb909eaf6572dc2a0cac7557cb91d2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44328c2fa45978ff186a545320633715.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/24/ad359894-73e0-48c7-80fd-6506841d0b8f.png?resizew=458)
(1)当点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f884e10cb1e8abd3037d58d6291047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8579d50c6b95c895fb7abcb845f136bf.png)
(2)在运动过程中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de13ea703039443554259feb9dd5eb29.png)
(3)在运动过程中,是否存在某个时刻,使点B、D、P围成的三角形与点B、D、Q围成的三角形全等,若存在请直接写出t的值,若不存在请说明理由.
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解答题-问答题
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适中
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【推荐2】甲乙两商场以同样的价格出售同样的商品,并且又各自推出不同的优惠方案,在甲商场累计购物超过200元后,超出200元的部分按85%收费,在乙商店累计超过100元后,超出部分按照90%收费.
(1)若你准备用80元去购物,你会怎样选择商场来购物?若你准备用160元去购物,选择到哪家商场购物花费少?(直接回答)
(2)设你购物花费x(x>200)元,实际花费为y元.分别写出在甲、乙两个商场购物时,y与x的函数关系式;
(3)在(2)的情况下,请根据两家商场的优惠活动方案,讨论到哪家商场购物花费少?说明理由.
(1)若你准备用80元去购物,你会怎样选择商场来购物?若你准备用160元去购物,选择到哪家商场购物花费少?(直接回答)
(2)设你购物花费x(x>200)元,实际花费为y元.分别写出在甲、乙两个商场购物时,y与x的函数关系式;
(3)在(2)的情况下,请根据两家商场的优惠活动方案,讨论到哪家商场购物花费少?说明理由.
您最近一年使用:0次