21-22高二·江苏·课后作业
1 . 已知点
关于直线l的对称点为
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca979687ffb2214e747525635a6912c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f855bbeb00d652786e768bc4fa64d74.png)
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2 . 设a为实数,已知过两点
,
的直线的斜率为1,求a的值及A,B两点间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64fd06db3030985f5dbb84e408e658f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2adbada62a49c0f7035754f981282f24.png)
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21-22高二·江苏·课后作业
3 . 若过原点的直线
与连接
,
两点的线段相交,求直线l的斜率和倾斜角的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6e59a5aac7c264014e7a7dc22c9b37.png)
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4 . 已知点A(a,2), B(3,7),C(-2,-9a)在同一条直线上,求实数a的值.
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21-22高二·江苏·课后作业
5 . 设m为实数,若
,
,
三点共线,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c53cfa785f3d78e95a3b170180fd4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6be6eff30a39fad935d177b8e92d9cf.png)
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21-22高二·江苏·课后作业
6 . (1)当m为何值时,经过两点
,
的直线的斜率是12?
(2)当m为何值时,经过两点
,
的直线的倾斜角是60°?
(3)当m为何值时,经过两点
,
的直线的倾斜角是钝角?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd0c5e769fd7ab8726ba47cd68f860ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e936d22b6f5eb78d75aadecb746b15.png)
(2)当m为何值时,经过两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3050a4354b73cfbcc4b4d09bfdfaed90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ba4f6da07277c3ab42f7797b18b8a7.png)
(3)当m为何值时,经过两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5343f6dee6d12906b09ff03166350a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec92d4f575c74264ea1b4bf35d842a54.png)
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21-22高二·江苏·课后作业
7 . 已知直线的斜率
,且
,
,
是这条直线上的三个点,求实数x和y的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da927eda15e4af160175ce6136f0404e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d136db6db6785bd76ae159087cee6128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aea6d4284f9aa3bff1f79564394a64d.png)
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21-22高二·江苏·课后作业
8 . 分别求经过下列两点的直线的斜率:
(1)
,
;
(2)
,
;
(3)
,
;
(4)
,
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bad9a4a9365dc43f23c27b9a64426a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8833ba3833480237f47774984958c01d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ae1b361135eaae8d172cb7aa490d6c.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0481d24e2af1e0cd348732b9444d1dde.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1d43cd882e6a44e3500e7ebc180daa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b9b5d00a3f789a62ad63d87e96cc0c.png)
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9 . 分别判断下列三点是否在同一直线上:
(1)
,
,
;
(2)
,
,
;
(3)
,
,
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663d94efcc8a8a4b5a3563e94eb8fbb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa8c0382d087631a601381ff001aed2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8156a557d9b963a77dfd88178789ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4e71593587f76bc6f8cdd3dc54e605.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0924ff22fff9f5639feb0ceeece80d.png)
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