已知
与
成正比例,当
时,
,求
与
之间的函数关系式,并判断它是不是正比例函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a7fa0f27339e750dd7e7c3b8b37759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
2021九年级·全国·专题练习 查看更多[1]
(已下线)考点10 一次函数(考点)-备战2021年中考数学考点微专题
更新时间:2021-05-13 16:16:21
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【推荐1】已知,在平面直角坐标系中,直线y=kx+b经过点A(1,-1)和点B(3,3)
(1)求直线AB所对应的函数表达式;
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(1)求直线AB所对应的函数表达式;
(2)若点M(2,m)在直线AB上,求m的值.
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【推荐2】甲、乙两地相距
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写出
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c50e6fbefde5964c8d8523b524cb88.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://img.xkw.com/dksih/QBM/2020/7/29/2516492955844608/2517077051473920/STEM/3edad3b501d64fbbae33ec2e163faffa.png?resizew=218)
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