求下列直线
的方程:
(1)
的倾斜角是
,
在
轴上的截距是
;
(2)
在
轴、
轴上的截距分别是
、4;
(3)直线
经过点
、
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732250efe9c8c0cbca127fb2ed2a4bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/274a9dc37509f01c2606fb3086a46f4f.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e5c320d78ef38e330176c335cc58e8.png)
23-24高二上·上海·课后作业 查看更多[2]
更新时间:2023-09-11 20:16:39
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解答题-问答题
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解题方法
【推荐1】已知三角形
的三个顶点的坐标分别是
,
,
.
(1)求BC边上的高所在直线的方程;
(2)求BC边上的中线所在直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29fc95526a39ae87a6e736900fb90e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859bf9cae1ba707d53066042073251f9.png)
(1)求BC边上的高所在直线的方程;
(2)求BC边上的中线所在直线的方程.
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解题方法
【推荐2】已知平行四边形
中,三个顶点的坐标分别为
、
、
,分别求
与
边所在直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14168792b74b97b8bc51531604ba36b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0785a08303a75cac963bc78341b513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
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解题方法
【推荐1】根据下列条件,分别写出直线的方程:
(1)经过点
,斜率为3;
(2)经过点
,斜率为
;
(3)经过点
,斜率为
;
(4)经过点
,斜率为0;
(5)斜率为
,在y轴上的截距为
;
(6)斜率为
,与x轴交点的横坐标为
.
(1)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20660e49954f09601cbf528a7f436fca.png)
(2)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0481d24e2af1e0cd348732b9444d1dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(4)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaef66a0582e95fb5c57a405acdea9a.png)
(5)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(6)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a94acdfb41489d5694b5a64b9e99754.png)
您最近一年使用:0次
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【推荐2】根据条件写出下列直线的斜截式方程:
(1)倾斜角为150°,在y轴上的截距是-2;
(2)倾斜角为60°,与y轴的交点到坐标原点的距离为3.
(1)倾斜角为150°,在y轴上的截距是-2;
(2)倾斜角为60°,与y轴的交点到坐标原点的距离为3.
您最近一年使用:0次
解答题-问答题
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较易
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解题方法
【推荐1】根据下列条件分别写出直线的方程,并化为一般式方程.
(1)斜率是
,且经过点
;
(2)斜率为4,在
轴上的截距为-2;
(3)经过
,
两点;
(4)在
轴、
轴上的截距分别是-3,-1.
(1)斜率是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a99614630a24042398be6594bb2a91.png)
(2)斜率为4,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cad6bebfd23b02c6cec9d08cf641f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b53ac0f9b701c082cc61b0d767942.png)
(4)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
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名校
解题方法
【推荐2】已知
的顶点
,
边上的中线
所在的直线方程为
,
边上的高
所在直线方程为
,求:
(1)直线
方程
(2)顶点
的坐标
(3)直线
的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36828be50c7405bb08ec09c64c80bd5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ef6505ddfd58cfc6d6d8bd2db12285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22bc4d9cf7a0152a36ef8b323c8a11.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)顶点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次