如图,在平面直角坐标系中,
OABC的边OA在y轴的正半轴上,反比例函数
的图像分别交AB于中点D.交OC于点E,且
,连接AE,DE,若
,则k的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/160e07ef-bfda-4487-b499-010c38578fde.png?resizew=213)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8de4de4b1e8788406fe717d489f45a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5451756783b381568870a8d28d24748.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/160e07ef-bfda-4487-b499-010c38578fde.png?resizew=213)
A.2 | B.![]() | C.3 | D.![]() |
21-22八年级下·江苏苏州·期末 查看更多[2]
江苏省苏州市苏州高新区实验初级中学2021-2022学年八年级下学期期末数学试题(已下线)专题6.24 反比例函数与图形相似综合(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)
更新时间:2022-07-05 14:24:29
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【推荐1】如图,在平面直角坐标系
中,点
在直线
上,点
的横坐标为
,点
是
轴正半轴上一点,点
在反比例函数
图象上,联结
、
和
.如果四边形
是矩形,那么
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9940526785ca763da2dfa35e77c934.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在
(k>0)的图象上有两点A(1,4),B(4,1),过这两点分别向x轴引垂线交x轴于C,D两点.连接OA,OB,AC与BO相交于点E,记△OAE,梯形EBCD的面积分别为S1,S2,则有
![](https://img.xkw.com/dksih/QBM/2013/5/2/1573646735400960/1573646740561920/STEM/85994f6d3f414a63b8e42864de538cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/2013/5/2/1573646735400960/1573646740561920/STEM/85994f6d3f414a63b8e42864de538cac.png)
A.S1>S2 | B.S1=S2 | C.S1<S2 | D.不能确定 |
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【推荐1】如图,▱ABCD的对角线AC,BD交于点O,已知
,
,
,则
的周长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18444ec3e5e3b8a0cf488732c34866d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.13 | B.17 | C.20 | D.26 |
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【推荐2】如图,在
ABCD中,AB=6,AD=9,∠BAD的平分线交BC于点E,交DC的延长线于点F,BG⊥AE于G,BG=
,则梯形AECD的周长为( )
![](https://img.xkw.com/dksih/QBM/2014/6/5/1573732013244416/1573732018626560/STEM/20b5d1dd51584be69a728aeea6015a63.png?resizew=247)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
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![](https://img.xkw.com/dksih/QBM/2014/6/5/1573732013244416/1573732018626560/STEM/20b5d1dd51584be69a728aeea6015a63.png?resizew=247)
A.22 | B.23 | C.24 | D.25 |
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【推荐1】如图,在直角坐标系中,O为坐标原点,函数
和
的图象上,分别有A、B两点,若AB∥x轴且交y轴于点C,且OA⊥OB,S△AOC=
,S△BOC=
,则线段AB的长度为( )
![](https://img.xkw.com/dksih/QBM/2019/11/11/2331760562315264/2332411957370881/STEM/d7ff01e8a8f24f7fb6ff24627cb3ed10.png?resizew=207)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d154391a8726c2d087a88539e90997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f857a274e8f6607e464057221d851d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0874f019492261eb175bdcc08c189d.png)
![](https://img.xkw.com/dksih/QBM/2019/11/11/2331760562315264/2332411957370881/STEM/d7ff01e8a8f24f7fb6ff24627cb3ed10.png?resizew=207)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知菱形ABCD的边长是6,点E在直线AD上,若DE=2,连接BE与对角线AC相交于点F,则FC:AF的值为( )
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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