如图,已知直线y=mx+n与反比例函数
交于A、B两点,点A在点B的左边,与x轴、y轴分别交于点C、点D,AE⊥x轴于E,BF⊥y轴于F
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/f2d5f51c-c8af-48c1-b91f-b90a82a0b043.png?resizew=199)
(1)直接写出m、n、k的正负性
(2)若m=1,n=3,k=4,求直线EF的解析式
(3)写出AC、BD的数量关系,并证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/f2d5f51c-c8af-48c1-b91f-b90a82a0b043.png?resizew=199)
(1)直接写出m、n、k的正负性
(2)若m=1,n=3,k=4,求直线EF的解析式
(3)写出AC、BD的数量关系,并证明
更新时间:2017-04-13 20:01:44
|
相似题推荐
解答题-问答题
|
较难
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【推荐1】抛物线
交x轴于A、B(A在B左侧),交y轴负半轴于C且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/87bc6692-3cc0-47b9-8bf1-c94ab3c2dd11.png?resizew=253)
(1)直接写出抛物线解析式;
(2)如图1,若
过D作直线
交抛物线于M、N(M、N不与A、B重合且M在N左侧),直线
,
交于P点,求
;
(3)如图2,若抛物线顶点为D,直线
与抛物线交于E、F(E在F左侧),G为
中点,求
的比值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82775de06fabc5294fe8e44b0b105a77.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/87bc6692-3cc0-47b9-8bf1-c94ab3c2dd11.png?resizew=253)
(1)直接写出抛物线解析式;
(2)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d776a89f4fd29dccffe1040069d59ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279563c3c055777ce1aa369a2ef54aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ba707cd41b3c1871e807e4cbad8e28.png)
(3)如图2,若抛物线顶点为D,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472fac9e0c0c7655bb9f01439cdce7e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d851b5b957cd0ecfe232cc216b2a65.png)
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名校
解题方法
【推荐2】如图,已知抛物线
与
关于
轴对称,且与
轴交于点
,与
轴交于点A,
.
![](https://img.xkw.com/dksih/QBM/2021/6/7/2737913764413440/2799476278403072/STEM/f9e88eb4-ee1a-426b-91e2-684501234672.png)
(1)求出
的解析式,并试猜想出与一般形式的二次函数
关于
轴对称的二次函数的解析式(不要求证明);
(2)若
的中点是点
,求
的值;
(3)若过点
的一条直线与
的图象交于另一点
,
且满足
,
(
为常数)求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76fd8b6656033f11691f3b23a726cc3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dbf5b53ec0d131d129b0ae52b807f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/6/7/2737913764413440/2799476278403072/STEM/f9e88eb4-ee1a-426b-91e2-684501234672.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76fd8b6656033f11691f3b23a726cc3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08fbd3e3cb39b4a21549f3c3b20747a.png)
(3)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76fd8b6656033f11691f3b23a726cc3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f90e2ac96a0175b7c22302186e51be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9d986c1e99d5c8e0c45edb3a60833a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132a3b5ea5ebf3c54ba33a3b94fbac38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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解答题-证明题
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较难
(0.4)
【推荐1】【操作】如图①.矩形纸片
中,
.点P在
上,点Q在
上,
,将纸片沿
翻折,使顶点C落在矩形
内,对应点为
,
的延长线交直线
于点M,再将纸片的另一部分翻折,使顶点A落在直线
上,对应点为
,折痕为
.猜想
,
之间的位置关系为__________;
【探究】如图②,将矩形纸片
纸片任意翻折,折痕
(P在
上,Q在
上),使顶点C落在矩形
内,对应点为
,
的延长线交直线
于点M,再将纸片的另一部分翻折,使顶点A的对应点
落在直线
上,折痕为
.
,求证:
;
②当
,
,
,
时,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb6694f3443cc5f4d09948679251b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055c583a7ddf04e766727cb9bb2fc09e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096fdcee49451970e84214dee5c2e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096fdcee49451970e84214dee5c2e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
【探究】如图②,将矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096fdcee49451970e84214dee5c2e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b10100be43f77a13fa0ccd1c1d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096fdcee49451970e84214dee5c2e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c55d8d59192047f4e18f79b2b1e814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b112af121e615cc6068fd29dc4344900.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb4252bbeacacd8b21432c083a28021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30e51d3170d01d7c227b71902e25626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a863c96a31a4fd3ad53bbc5b1dcd95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c62f3802af091de8b956c05be22a41.png)
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解答题-问答题
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较难
(0.4)
【推荐2】如图,直线
与坐标轴分别交于点A,B,
,以
为边在y轴的右侧作正方形
.
(2)如图,点D是x轴上一动点,点E在
的右侧,
,
.
①如图1,问点E是否在定直线上,若是,求该直线的解析式;若不是,请说明理由;
②如图2,点D是线段
的中点,另一动点H在直线
上,且
,请直接写出点H的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e915141623f3af2e8f840dee611553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde89b8c04875bd402e5ffc7b5cb1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9040cff7e9e20dd2817ad9888237d8.png)
(2)如图,点D是x轴上一动点,点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8146c573edc0c64ebbc17eb99a71e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
①如图1,问点E是否在定直线上,若是,求该直线的解析式;若不是,请说明理由;
②如图2,点D是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb018223e4f95eacb125a09caaf415a.png)
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名校
【推荐1】如图,直线
与双曲线
交于A,
两点,点A的坐标为
,点
是双曲线第一象限分支上的一点,连结
并延长交
轴于点
,且
.
(1)求
的值,并直接写出点
的坐标;
(2)点
是
轴上的动点,连结
,
,求
的最小值和点
坐标;
(3)
是坐标轴上的点,
是平面内一点,是否存在点
,
,使得四边形
是矩形?若存在,请求出所有符合条件的点
的坐标;若不存在,请说明理由.
![](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/7f9e8449aad35c5d840a3395ea86df6d.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/2023/10/2/a7835e59-cd21-4882-9c4c-4bdc83a49829.png?resizew=436)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(3)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/712d9d9e29645c1df6ae23125b4aa1cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
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较难
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【推荐2】小吕在学习了反比例函数知识后,结合探究反比例函数图像与性质的方法,对新函数
及其图像进行如下探究.
(1)自变量x的取值范围是______,x与y的几组对应值如表:
其中m=______.(结果保留根号)
(2)请在给出的平面直角坐标系中画出该函数的图像,并结合图像写出该函数的一条性质:______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/a5d0ab77-ad74-484b-9516-ac5e2fca036c.png?resizew=266)
(3)当
时,x的取值范围为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6197b76c440fa00f2795a10a1241e75b.png)
(1)自变量x的取值范围是______,x与y的几组对应值如表:
x | … | 1 | 2 | 3 | 4 | 5 | … | |||
y | … | 1 | 0 | m | … |
(2)请在给出的平面直角坐标系中画出该函数的图像,并结合图像写出该函数的一条性质:______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/a5d0ab77-ad74-484b-9516-ac5e2fca036c.png?resizew=266)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24330727ea01baef316ed11f3cf574c3.png)
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