如图,在平面直角坐标系中,点A的坐标是
,函数
的图象经过菱形
的顶点C,若菱形
的面积为20,则k的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b569572c8d9bf05d78d3ab741e68bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9212e728b36c078188606c9d429389d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/ab5ada3d-df18-4a0b-b590-9b8fff678003.png?resizew=132)
22-23八年级下·河南南阳·期末 查看更多[3]
河南省南阳市唐河县2022-2023学年八年级下学期期末数学试题(已下线)专题21.6 反比例函数的图象与性质(一)【十大题型】-2023-2024学年九年级数学上册举一反三系列(沪科版)(已下线)专题6.1 反比例函数的图象与性质(一)【十大题型】-2023-2024学年九年级数学上册举一反三系列(北师大版)
更新时间:2023-07-03 16:33:45
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【推荐1】如图,已知点P(5,3),过点P作PM⊥x轴于点M,PN⊥y轴于点N,反比例函数
的图象交PM于点A,交PN于点B.若四边形OAPB的面积为9,则k=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
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【推荐2】如图,点是反比例函数
图象上的一点,过点
作
轴于点
,点
为
轴负半轴上一点且满足
,连接
交
轴于点
,连接
,若
,则
的值为
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【推荐1】如图,在
中,
,
,
于点D,点E、F分别是线段
上的动点,且
,则
的最小值为 ________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】如图所示,在菱形ABCD中,AB=6,∠BAD=120°,△AEF为等边三角形,点E、F分别在菱形的边BC.CD上滑动,且E、F不与B、C、D重合.
(1)计算:
=________ ;
(2)当点E、F在BC、CD上滑动时,△CEF的面积最大值是____________ .
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a592351a3123021dc88d05331b326175.png)
(2)当点E、F在BC、CD上滑动时,△CEF的面积最大值是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/f4214be1-882b-4893-8825-7eb4b050255c.png?resizew=161)
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【推荐1】如图,菱形
中,点
是边
的中点,
垂直
交
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,
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_____ .
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【推荐2】如图,菱形
中,
,M为边
上的一点,将菱形沿
折叠后,点A恰好落在
的中点E处,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1039601edd7326b628a3201a3d4af948.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
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