题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041537-86131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041537-45512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041537-95204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041537-20699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041538-66936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041538-61794.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
解答:解:根据题意,知:y随x的增大而减小,
则k<0,即1-2m<0,m>
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041539-71216.png)
故选D.
点评:根据正比例函数的大小变化规律判断k的符号:当k>0时,y随x的增大而增大;当k<0时,y随x的增大而
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041533-20821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041533-99320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041525-99843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041526-19879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041525-99843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041525-99843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041508-37155.png)
或右)平移 单位.
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041503-10264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041449-22686.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041449-91420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041449-91580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041450-21525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041450-26161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041450-52401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041450-29511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041451-71609.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041451-54600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041451-96755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041451-87367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041452-83620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041452-90881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041452-74775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041452-61009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041452-74251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041449-22686.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041453-56395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041453-99836.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041453-96855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041453-33541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041451-54600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041453-61105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016041454-50525.png)
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