已知函数
,不画图像,回答下列各题.
(1)开口方向为______ ;
(2)对称轴为______ ;
(3)顶点坐标为______ ;
(4)当
时,
随
的增大而______ ;
(5)当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
______ 时,
;
(6)当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
______ 时,函数
的最______ 值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62684f2b32ad1f3f079c94113202fdd.png)
(1)开口方向为
(2)对称轴为
(3)顶点坐标为
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(5)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
(6)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
18-19九年级·全国·课后作业 查看更多[2]
沪教版(上海)九年级上学期26.2 特殊二次函数的图像第1课时(已下线)专题2.6 二次函数y=ax2(a≠0)的图像与性质(巩固篇)(专项练习)-2021-2022学年九年级数学下册基础知识专项讲练(北师大版)
更新时间:2019-12-17 07:10:20
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【知识点】 y=ax²的图象和性质解读
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的坐标为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
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【推荐2】二次函数y=
,当x<0时,y随x的增大而增大,则m=___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3fd8ace1f2504a58de6085cfb4468d.png)
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