已知函数
的图象上有两点
.
(1)求m,n的值.
(2)已知直线
与直线
平行,且直线
与线段
总有公共点,直接写出k值及b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888cf62de648e7c3694e6258f20d62ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161f099c5945451375d5d3618439be98.png)
(1)求m,n的值.
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
更新时间:2023-01-30 18:58:36
|
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在Rt
中,
,点
为
边上一个动点,过点
作
交边
于
,过点
作射线
交
边于点
,交射线
于点
,联结
.设
两点的距离为
,
两点的距离为
.
![](https://img.xkw.com/dksih/QBM/2019/10/25/2319697994514432/2320434763644928/STEM/59b201ad08cd4207a5251eb21fb29903.png?resizew=261)
(1)求证:
;
(2)求
关于
的函数解析式,并写出
的取值范围;
(3)点
在运动过程中,
能否构成等腰三角形?如果能,请直接写出
的长,如果不能,请简要说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871d56a3bcc94f40e2b20f5bea2edd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b49b14b5b0f75a570ff033f39f93d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2019/10/25/2319697994514432/2320434763644928/STEM/59b201ad08cd4207a5251eb21fb29903.png?resizew=261)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9847b9e734dcdbda3f82513e18c6181a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,正方形OABC的边长为a.直线y=bx+c交x轴于E,交y轴于F,且a,b,c分别满足:-(a-4)2≥0,c=
+
+8.
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(1)直线y=bx+c的解析式为________;正方形OABC的对角线的交点D的坐标为________;
(2)若正方形OABC沿x轴负方向以每秒移动1个单位长度的速度平移,设平移的时间为t秒,问是否存在t的值,使直线EF平分正方形OABC的面积?若存在,请求出t的值;若不存在,请说明理由;
(3)点P为正方形OABC的对角线AC上的动点(端点A、C除外),PM⊥PO,交直线AB于M,在备用图中画图分析,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe741776f86b1a6a1a0d13aa217b4c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bee820609dec6f8e7af244ac1bf16f.png)
![](https://img.xkw.com/dksih/QBM/2018/7/1/1979163170553856/1980632973770752/STEM/dede7a7960f340309bd76c121aff99ec.png?resizew=149)
![](https://img.xkw.com/dksih/QBM/2018/7/1/1979163170553856/1980632973770752/STEM/e0c42dd8c08f48b393c942a4cacbad75.png?resizew=162)
(1)直线y=bx+c的解析式为________;正方形OABC的对角线的交点D的坐标为________;
(2)若正方形OABC沿x轴负方向以每秒移动1个单位长度的速度平移,设平移的时间为t秒,问是否存在t的值,使直线EF平分正方形OABC的面积?若存在,请求出t的值;若不存在,请说明理由;
(3)点P为正方形OABC的对角线AC上的动点(端点A、C除外),PM⊥PO,交直线AB于M,在备用图中画图分析,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79694df9444183e9ac0727844a47b4ea.png)
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解答题-问答题
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适中
(0.65)
【推荐1】如图,已知一次函数
的图象与反比例函数
的图象交于A,B两点,且点A的横坐标和点B的纵坐标都是﹣2,求:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/3430da25-9494-4a78-bc48-bbf0d1753b8a.png?resizew=159)
(1)一次函数的解析式;
(2)
的面积;
(3)直接写出一次函数的函数值大于反比例函数的函数值时x的取值范围.
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(1)一次函数的解析式;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1415e415ec7678b962af22b752faeea8.png)
(3)直接写出一次函数的函数值大于反比例函数的函数值时x的取值范围.
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系xOy中,已知正比例函数y1=﹣2x的图象与反比例函数y2=
的图象交于A(﹣1,n),B两点.
(1)求出反比例函数的解析式及点B的坐标;
(2)观察图象,请直接写出满足y2≤2的取值范围;
(3)点P是第四象限内反比例函数的图象上一点,若
POB的面积为1,请直接写出点P的横坐标.
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(1)求出反比例函数的解析式及点B的坐标;
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