如图,点A的坐标是(−2,0),点C是以OA为直径的⊙B上的一动点,点A关于点C的对称点为点P. 当点C在⊙ B上运动时,所有这样的点P组成的图形与直线y=kx-3(k>0)有且只有一个公共点,则k的值是( )
![](https://img.xkw.com/dksih/QBM/2022/4/28/2968003453149184/2968800122093568/STEM/ac1871a7fe55466f92a066e0c761fe49.png?resizew=193)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2968003453149184/2968800122093568/STEM/ac1871a7fe55466f92a066e0c761fe49.png?resizew=193)
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更新时间:2022-04-29 21:02:13
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【推荐1】如图,直线
与坐标轴相交于点
,
,将
沿直线
翻折到
的位置,当点
的坐标为
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的函数解析式是( )
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【推荐2】如图,在平面直角坐标系中,四边形
是边长为1的正方形,顶点A、C分别在x轴的负半轴、y轴的正半轴上.若直线
经过点B,则k的值是( ).
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【推荐1】如图,已知
,
,点Q从点P出发,先沿直线移动到y轴上的点M处,再沿垂直于y轴的方向向左移动1个单位至点N处,最后沿直线移动到点B处停止.当点Q移动的路径最短时(即三条线段
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【推荐2】如图,点A的坐标为
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的长为( )
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【推荐1】如图,在平行四边形
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【推荐2】已知两个直角三角形的三边长分别为3,4,
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【推荐1】如图,AB是⊙O的直径,PD切⊙O于点C,交AB的延长线于D,且AO=CD,则∠PCA=( )
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【推荐2】如图,
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,
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