题目
题型:不详难度:来源:
答案
解析
试题分析:根据题意,当截距都为零时,则直线方程可以设为y=kx,将点(-3,-2)代入可知,得到k=
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145027-86043.png)
点评:主要是考查了直线方程的求解,属于基础题。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145004-93248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145004-92030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145004-28787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145004-92030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145004-15390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145005-82554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145005-95198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145005-89481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145006-98038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145006-90637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145006-27437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145006-84147.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-66134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-50253.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-24370.png)
(2)求⊙
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-66134.png)
(3)设点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-58075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-66134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022145007-90167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144958-10580.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144952-41928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144952-26117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144953-94033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144953-40894.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144953-18863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144953-80055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144954-42062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144952-41928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144953-94033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144940-11050.png)
(1)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144940-11050.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144940-25127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144940-11050.png)
(2)若点A(-1,-2)到直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144940-11050.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022144940-11050.png)
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