如图,二次函数
的图像与
轴交于点
,与
轴交于点
,若它的对称轴是直线
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/3ef7a02e-d1e2-424d-9178-c1efc4462551.png?resizew=238)
A.![]() | B.![]() |
C.![]() | D.若![]() ![]() ![]() |
22-23九年级上·河南南阳·期末 查看更多[2]
河南省南阳市邓州市2022-2023学年九年级上学期期末数学试题(已下线)专题13 二次函数的图象与性质(十五种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(北师大版)
更新时间:2023-03-16 14:11:14
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【推荐1】二次函数
(
)的图象如图所示,则一次函数
(
)与反比例函数
(
)在同一平面直角坐标系中的图象大致是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/b3ebe805-2c8e-4cb2-8f39-5ea844cc1f6e.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465f84e68cdc9331a9c9f392668ba8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5692b4b195d51c131408debe0ea588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef20073a12bab727faa217718b63414.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/b3ebe805-2c8e-4cb2-8f39-5ea844cc1f6e.png?resizew=161)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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【推荐2】如图所示,二次函数y=ax2+bx+c的图象开口向上,且对称轴在(﹣1,0)的左边,下列结论一定正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/4/9fbbcb5a-9e99-43de-a9fd-e290c0ad61ff.png?resizew=119)
A.abc>0 | B.2a﹣b<0 | C.b2﹣4ac<0 | D.a﹣b+c>﹣1 |
您最近一年使用:0次
单选题
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【推荐1】二次函数
的图像如图所示,它的对称轴为直线
,则下列结论:①
;②当
时,
;③
;④
(
为任意实数);其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/bdbbe1c1-b263-457d-bab4-d950e4f7ed09.png?resizew=99)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f3160ea7b9bb9e3c8885b9a11ea4c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c016f2b7180f140aac7a74e0112b08c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/bdbbe1c1-b263-457d-bab4-d950e4f7ed09.png?resizew=99)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知某二次函数y=ax2+bx+c(a≠0)的部分图象如图所示,下列结论中正确的有( )
①abc<0;②a﹣b+c<0; ③a=
;④8a+c>0.
![](https://img.xkw.com/dksih/QBM/2020/11/13/2592102059081728/2596784412409856/STEM/cb02024649324e95866fd275de1ea013.png?resizew=122)
①abc<0;②a﹣b+c<0; ③a=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f4db2783cfb3264280de0d8fa5207d.png)
![](https://img.xkw.com/dksih/QBM/2020/11/13/2592102059081728/2596784412409856/STEM/cb02024649324e95866fd275de1ea013.png?resizew=122)
A.1个 | B.2个 | C.3个 | D.4个 |
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