题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104252-44230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104252-89074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104252-77009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104253-17014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104253-93209.png)
(1)求反比例函数和一次函数的关系式;
(2)在直线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104253-40957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104253-57168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-53450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-51119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104253-57168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-97194.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104252-44230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104255-30651.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104255-53382.png)
∵双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104255-90627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104255-56306.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104255-52620.png)
由直线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104252-89074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104256-50246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104256-36208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-97453.png)
∴反比例函数关系式为
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104255-90627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-27731.png)
(2)存在符合条件的点
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-24374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-45317.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-53450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-51119.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-25098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104258-86201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104253-40957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104258-96452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104258-41304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104258-54443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104258-91823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-24374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104259-39885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104259-74428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104259-24537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104300-89797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104300-18659.png)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104300-13611.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104300-66807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104301-25674.png)
从而
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104301-96821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-24374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104257-45317.png)
解析
(2)由
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-53450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104254-51119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104300-66807.png)
核心考点
试题【如图,已知反比例函数的图象与一次函数的图象交于、两点,.(1)求反比例函数和一次函数的关系式;(2)在直线上是否存在一点,使∽,若存在,求点坐标;若不存在,请说】;主要考察你对反比例函数定义等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-65717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-16745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-31216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-16534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-14755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104232-47163.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104232-41780.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104232-48336.png)
(2)设双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-14755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104231-31216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104232-76999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104233-12741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104232-76999.png)
滑动,两直角边始终与坐标轴平行,且与线段
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104233-86981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104233-35588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104233-12741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104233-46543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104223-28965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104223-17921.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104223-43681.png)
A.第一、二象限 | B.第一、三象限 | C.第二、三象限 | D.第二、四象限 |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104213-29956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104214-98824.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104214-10649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104214-65208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104214-27428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104215-58420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104215-86694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104215-76419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104216-93175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104216-48827.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104209-95916.png)
A.y1<y2<y3 | B.yl>y2>y3 | C.y2>y3>yl | D.y2>y1>y3 |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104155-62672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104155-70533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017104155-29347.png)
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