如图为反比例函数
在第一象限中的图象,已知一次函数
与反比例函数
的图象交于点A,且A点横坐标为4,直线
与与反比例函数
的图象交于A、B两点,与x轴、y轴分别交于C、D两点.
(1)求反比例函数
解析式;
(2)如图,过点A作
轴于点E,过点B作
轴于点F,若点B横坐标为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c914e2321e28c2c268e90354db0bf5.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/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/584503da-68a9-491e-a1b2-ed889a56baf3.png?resizew=167)
(1)求反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(2)如图,过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8178c63d125ee6235feeb2fc70d02745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d7feb7cd0d8c8a1e4c8fb10ac9f919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b42ea064b5c27a8336b4fb9ffc0c78.png)
更新时间:2024-01-11 19:50:23
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真题
【推荐1】如图,一次函数y=kx+b的图象与坐标轴分别交于A、B两点,与反比例函数y=
的图象在第一象限的交点为C,CD⊥x轴,垂足为D,若OB=3,OD=6,△AOB的面积为3.
(1)求一次函数与反比例函数的解析式;
(2)直接写出当x>0时,kx+b﹣
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![](https://img.xkw.com/dksih/QBM/2017/7/28/1773763398795264/1773763399122944/STEM/825b043f675143c3846a8d6bc0acc5c0.png)
(1)求一次函数与反比例函数的解析式;
(2)直接写出当x>0时,kx+b﹣
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【推荐2】已知y=y1+y2,其中y1与3x成反比例,y2与-x2成正比例,且当x=1时,y=5;当x=-1时,y=-2.求当x=3时,y的值.
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【推荐1】如图,已知点A、D、C、F在同一条直线上,
,
.给出下列三个条件:①
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/5f81c9aa-33f4-49f3-b189-9f99f5af9b97.png?resizew=209)
(1)请在上述三个条件中选取一个条件,使得
.你选取的条件序号为______,你判定
的依据是______(填“
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(2)请用(1)中所选条件证明
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(3)
可看作是由
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于M,当
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,
是以
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的长.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00f89f6fd05f521d05129244aa4e5e1.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/5f81c9aa-33f4-49f3-b189-9f99f5af9b97.png?resizew=209)
(1)请在上述三个条件中选取一个条件,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96686afa0a63161cfd3cc8cccaff09d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96686afa0a63161cfd3cc8cccaff09d0.png)
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(2)请用(1)中所选条件证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96686afa0a63161cfd3cc8cccaff09d0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
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【推荐2】如图1,已知等边三角形ABC,点P为AB的中点,点D、E分别为边AC、BC上的点,∠APD+∠BPE=60°.
(1)①若PD⊥AC,PE⊥BC,直接写出PD、PE的数量关系:____;
②如图1,证明:AP=AD+BE
(2)如图2,点F、H分别在线段BC、AC上,连接线段PH、PF,若PD⊥PF且PD=PF,HP⊥EP.求∠FHP的度数;
(1)①若PD⊥AC,PE⊥BC,直接写出PD、PE的数量关系:____;
②如图1,证明:AP=AD+BE
(2)如图2,点F、H分别在线段BC、AC上,连接线段PH、PF,若PD⊥PF且PD=PF,HP⊥EP.求∠FHP的度数;
![](https://img.xkw.com/dksih/QBM/2019/11/21/2338543328346112/2338925912186880/STEM/1509e93d-27b8-44be-9ee6-ad71cd365cdc.png)
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解答题-问答题
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【推荐1】如图,一次函数
的图象与反比例函数
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/3d3fc5f1-387b-4e45-b7bf-f0a71361b0e2.png?resizew=202)
(1)求反比例函数与一次函数的表达式;
(2)若P为x轴上一点,
的面积为5,求点P的坐标;
(3)结合图象,关于x的不等式
的解集为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/3d3fc5f1-387b-4e45-b7bf-f0a71361b0e2.png?resizew=202)
(1)求反比例函数与一次函数的表达式;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
(3)结合图象,关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f6bcc1f9654c72a2e82e155777504b.png)
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【推荐2】如图,一次函数
的图象与
轴交于点
,与反比例函数
的图象交于点
,
.
(1)求反比例函数的表达式及点
的坐标;
(2)当
时,直接写出
的取值范围;
(3)在双曲线
上是否存在点
,使
是以点
为直角顶点的直角三角形?若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/152522ef-4f2b-4504-beee-a918216078ce.png?resizew=176)
(1)求反比例函数的表达式及点
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(2)当
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(3)在双曲线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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