已知二次函数
的图象与x轴的负半轴上交于两点为
和
,则直线
一定不经过( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9c0002b13f6cae093cd9dc9f19941b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758080793e3ca0b8166f840475434aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06bc3c4b7f25b2d17d30119d64ebee7.png)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
更新时间:2024-05-30 17:30:23
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【推荐1】已知二次函数
的图像如图所示,则一次函数
的图像可能是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/712776c5-a38a-4f79-aa6d-d0f739572c5a.png?resizew=125)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8926716bb73d30d6e8c688a7cffd12c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/712776c5-a38a-4f79-aa6d-d0f739572c5a.png?resizew=125)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知一次函数
中,
随着
的增大而减小,则这个函数的图像不经过( )
![](https://img.xkw.com/dksih/QBM/2015/11/16/1573927393820672/1573927399964672/STEM/8a19332399934985be3479f3bdac50ea.png)
![](https://img.xkw.com/dksih/QBM/2015/11/16/1573927393820672/1573927399964672/STEM/f4975a6360d34e42a954705cf2fbfd24.png)
![](https://img.xkw.com/dksih/QBM/2015/11/16/1573927393820672/1573927399964672/STEM/4e96f2acdbd54a2390eb49080fde944d.png)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
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【推荐1】已知二次函数
(a,b,c是常数,且
)的图象如图所示,有下列说法:①
;②
;③
;④
;⑤
;其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/1/6/2630225491247104/2633917266968576/STEM/2ad62120-e423-4262-b1f9-0240a2daca22.png?resizew=210)
![](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/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa285de4d015f208441ffe9a84bbd780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68ff94b0877adb96abbc3e0fa52d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77be6d1ffce916d4651546f8351395ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4630bb948780be53bc73d9ddef875000.png)
![](https://img.xkw.com/dksih/QBM/2021/1/6/2630225491247104/2633917266968576/STEM/2ad62120-e423-4262-b1f9-0240a2daca22.png?resizew=210)
A.①②③④ | B.①②④⑤ | C.①②③⑤ | D.②③④⑤ |
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【推荐2】如图,已知抛物线
的对称轴为直线
.给出下列结论:①
;②
;③
;④
.其中,正确的结论有( )
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712432193421312/2717504256073728/STEM/31a58dd9-ab59-493c-9e79-893774dceb5e.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16de2d7f06346a0fc6b5d6822e746237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa285de4d015f208441ffe9a84bbd780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c766352f0be38b719621052de92615bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9457ea96205b652a136dbd422b3142.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712432193421312/2717504256073728/STEM/31a58dd9-ab59-493c-9e79-893774dceb5e.png?resizew=143)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】如图,二次函数
的图象开口向上,图象经过点
和
且与y轴交于负半轴,下列给出五个结论:①
;②
;③
;④
;⑤
.其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/8d30e706-3f44-45b5-917d-0c2ff0884a15.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cbc6fbdb7a42c4f3f63ce6424e2eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2d770627f29a7c1fa6659ecee13b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/8d30e706-3f44-45b5-917d-0c2ff0884a15.png?resizew=161)
A.2 | B.3 | C.4 | D.5 |
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