2023高二上·江苏·专题练习
解题方法
1 . 根据下列条件分别写出直线的方程,并化为一般式:
(1)斜率是
,且经过点
;
(2)斜率为
,在
轴上的截距为
;
(3)经过
,
两点;
(4)在
轴、
轴上的截距分别为
.
(1)斜率是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4665b20346a6ef3fce4d7923d78c17a7.png)
(2)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74eb8a7738402df52d4a97262b85ca0.png)
(3)经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2397167d25171875d0a0678163482f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5ed58d6bbf8cd29bdff986691116eb.png)
(4)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8129d06516a3affd99ef5bc5e140f970.png)
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