如图,在平面直角坐标系
中,一次函数
的图象与反比例函数
的图象交于点
,与x轴交于点B.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/b92d8d6b-38af-473e-a734-5cca1ab587d6.png?resizew=311)
(1)求反比例函数的表达式及点B的坐标;
(2)点P是x轴正半轴上一动点,过点P作x轴的垂线l,交一次函数的图象于点D,交反比例函数的图象于点E.
ⅰ)若
,求线段
的长;
ⅱ)将反比例函数的图象沿直线l翻折,翻折后的图象与一次函数
的图象有两个交点M,N(点N的横坐标大于点M的横坐标),连接
,
,若
,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9940526785ca763da2dfa35e77c934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1249a960fb84711dc0197826fc54dac5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/b92d8d6b-38af-473e-a734-5cca1ab587d6.png?resizew=311)
(1)求反比例函数的表达式及点B的坐标;
(2)点P是x轴正半轴上一动点,过点P作x轴的垂线l,交一次函数的图象于点D,交反比例函数的图象于点E.
ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ecbd1d80324aa86c222d5fe79fc9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
ⅱ)将反比例函数的图象沿直线l翻折,翻折后的图象与一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075bc6df108c9c2b3b5ac46bca7c8d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c336f95a172dbe11df2b7d7adb792369.png)
更新时间:2024-02-29 20:04:08
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【推荐1】已知:如图,在平面直角坐标系中,直线
分别与
,
轴交于点
,
,与反比例函数的图象分别交于点
,
,
轴于点
,
,
,
.
(1)求
的长;
(2)求反比例函数的解析式;
(3)连接
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](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/03e6dc08b0ba0a0bf43d9395da447b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8465a617d22aa37446bce5b851585777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03f416cb4d50a5f473df4bbceeb3094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48813b8fc61cdb0c54fbc6a2e4bbd30b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求反比例函数的解析式;
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95abdaecb37a71068a98f0bffb23274d.png)
![](https://img.xkw.com/dksih/QBM/2019/2/1/2131184133316608/2131267417415680/STEM/b08e6d34460b4e5fb1c3ef4076a33b1b.png?resizew=182)
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【推荐2】如图,在平面直角坐标系中,O为坐标原点,
的边
垂直于x轴,垂足为点B,反比例函数
的图象经过
的中点C,且与
相交于点D,
,
(1)求反比例函数
的解析式;
(2)在x轴上是否存在一点P,使
的值最大,若存在,求出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9212e728b36c078188606c9d429389d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3b9cc8686955ae94b32fe03e3104ec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/21/31bfa75e-75e4-4ae5-bc7e-242f60a0edd4.png?resizew=160)
(1)求反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(2)在x轴上是否存在一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d7545d7ff2414da18c052ef9aa77ff.png)
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【推荐1】如图,已知反比例函数
的图象与正比例函数的图象交于
两点,且点
在第二象限,点
的横坐标为
.过点
作
轴,垂足为点
的面积为
.
(1)求反比例函数的表达式;
(2)若点
是这个反比例函数图象上的点,且
的面积是
面积的
倍,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d49d34012ddf68fb981eb4975ac99b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d3a0273d1f3046dfad2086d0df56c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e3ad1f8b18eb814d7fbf4417fea71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求反比例函数的表达式;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd51caff8d6cd6d3478fb4659789d8d.png)
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【推荐2】如图,在矩形
中,
,
两点分别在
轴的负半轴和
轴的正半轴上.反比例函数
(
)的图象经过点
,一次函数
(
)的图象与反比例函数的图象交于
,
两点,已知点
的横坐标为2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/11/63ee783d-1e97-4d7b-a6ae-c1d3ae8a2b2d.png?resizew=159)
(1)求反比例函数和一次函数的表达式;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ea6b5f801158380a615c3f99f615e1.png)
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(1)求反比例函数和一次函数的表达式;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
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【推荐1】如图,四边形ABCD的四个顶点在以AC为直径的⊙O上,点D为
的中点,过圆心O作OE⊥AB于点E,交BD于点F,AC=10,OF=1.
(1)求证:∠ABD=45°.
(2)求AB的长.
(3)求FG的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
(1)求证:∠ABD=45°.
(2)求AB的长.
(3)求FG的长.
![](https://img.xkw.com/dksih/QBM/2021/4/13/2698763333091328/2699889439768576/STEM/016a2fe8-1444-40e5-8f7d-807aab7bf708.png)
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【推荐2】如图,在平面直角坐标系中,矩形OABC的两边分别在x轴和y轴上,OA="16" cm,OC=8cm,现有两动点P、Q分别从O、C同时出发,P在线段OA上沿OA方向以每秒2cm的速度匀速运动,Q在线段CO上沿CO方向以每秒1 cm的速度匀速运动.设运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/2013/5/9/1573648988979200/1573648995205120/STEM/093580cb48cd4adca64b8cb89113a7d1.png?resizew=189)
(1)用含t的式子表示△OPQ的面积S;
(2)判断四边形OPBQ的面积是否是一个定值,如果是,请求出这个定值;如果不是,请说明理由;
(3)当△OPQ∽△ABP时,抛物线y=
x2+bx+c经过B、P两点,求抛物线的解析式;
(4)在(3)的条件下,过线段BP上一动点M作
轴的平行线交抛物线于N,求线段MN的最大值.
![](https://img.xkw.com/dksih/QBM/2013/5/9/1573648988979200/1573648995205120/STEM/093580cb48cd4adca64b8cb89113a7d1.png?resizew=189)
(1)用含t的式子表示△OPQ的面积S;
(2)判断四边形OPBQ的面积是否是一个定值,如果是,请求出这个定值;如果不是,请说明理由;
(3)当△OPQ∽△ABP时,抛物线y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(4)在(3)的条件下,过线段BP上一动点M作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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【推荐1】如图,直线
与双曲线
交于点A、B,过点A作AP⊥x轴,垂足P点的坐标是
,连接BP,且
.
![](https://img.xkw.com/dksih/QBM/2022/5/4/2978620094267392/2980620169486336/STEM/3a0b5b1c-704b-49f0-a512-1a5865804256.png?resizew=251)
(1)求正比例函数
和反比例函数
的解析式.
(2)当
时,求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff69f16de866ed5298b981bf5e5b9f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d105b74c40724a7da626e7c42afbf5fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d846ca1235ccda61a188ee2483f13f.png)
![](https://img.xkw.com/dksih/QBM/2022/5/4/2978620094267392/2980620169486336/STEM/3a0b5b1c-704b-49f0-a512-1a5865804256.png?resizew=251)
(1)求正比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff69f16de866ed5298b981bf5e5b9f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d105b74c40724a7da626e7c42afbf5fa.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac67e9a909472ab852d38d2ec66a1e1.png)
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【推荐2】如图,已知直线
与x轴、y轴交于A、B两点,与双曲线
交于D、E两点.
(2)若将直线向下平移,使直线与双曲线只有一个交点,求平移后的直线解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0be6f0f68f8022d97114afccfd451b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a5db16f1f84e3a98c02358aec5ca99.png)
(2)若将直线向下平移,使直线与双曲线只有一个交点,求平移后的直线解析式.
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