已知直线
的斜率与直线
的斜率相等,且直线
在
轴上的截距比在
轴上的截距大1,求直线
的方程.
![](https://img.xkw.com/dksih/QBM/2018/2/2/1873790940954624/1874406654754816/STEM/33858c3e63e743ce9dc0cb14e6472002.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2018/2/2/1873790940954624/1874406654754816/STEM/31b61211f6a248d5bd0dca1373707984.png?resizew=76)
![](https://img.xkw.com/dksih/QBM/2018/2/2/1873790940954624/1874406654754816/STEM/2e96d5e920294871b33f602190888e4a.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2018/2/2/1873790940954624/1874406654754816/STEM/0464142023f94931bdf14ec4b1d483c7.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2018/2/2/1873790940954624/1874406654754816/STEM/9dc37386261b4c0d868306a7342d961b.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2018/2/2/1873790940954624/1874406654754816/STEM/cee85b296e974a5fa050a4326b8a595a.png?resizew=9)
更新时间:2018-02-08 08:59:15
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相似题推荐
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【推荐1】已知直线
过点
,且倾斜角的余弦值是
,直线
与
平行,
与两坐标轴围成的三角形的面积为1,求直线
与
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d8016002067726f1c74bcd923068b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
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【推荐2】已知两直线l1:ax﹣by+4=0,l2:(a﹣1)x+y+b=0,分别求满足下列条件的a,b值
(1)l1⊥l2,且直线l1过点(﹣3,﹣1);
(2)l1∥l2,且直线l1在两坐标轴上的截距相等.
(1)l1⊥l2,且直线l1过点(﹣3,﹣1);
(2)l1∥l2,且直线l1在两坐标轴上的截距相等.
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解题方法
【推荐1】分别求出适合下列条件的直线方程:
(Ⅰ)过点
且与直线
平行;
(Ⅱ)经过直线
与
的交点,且和
,
等距离.
(Ⅰ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881fe2df23c5a0fe1d1fecbe9ffa55fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eccb81d955b508a75d1c76a754814000.png)
(Ⅱ)经过直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7c8559e4ff6553919e2e4357772078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aecadf57d41a7acc0d203c215666cc8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7078a4e8e927c163c7f98e66759c9834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a0e5a3019021f8e0ab3c6f4c68acc4.png)
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【推荐2】已知直线
,
,
,其中
与
的交点为P.
(1)求点P到直线
的距离;
(2)求过点P且与直线
的夹角为
的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f6a1f70e612c5c0933d8548dd3c593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7579565d32ea424e75f424db9cf0ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3eaa3f2cbf5e91e227de39037f805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(1)求点P到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
(2)求过点P且与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
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