如图,抛物线
的对称轴为
,抛物线与
轴相交于A、B两点,与
轴交于点
,其中点
的坐标为
.
(1)求点
的坐标;
(2)若点
在抛物线上,
,且
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079dd115a4b8cbc93918a853363786dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/21/6b0a703d-fea9-495e-84cf-606b4d995cf9.png?resizew=124)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871086b40fdebd773d04b75fea46cefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
23-24九年级上·湖北武汉·开学考试 查看更多[5]
湖北省武汉市华中师范大学第一附属中学光谷分校2023-2024学年九年级上学期开学考试数学试题陕西省渭南市大荔城关初级中学2023-2024学年九年级上学期第一次月考数学试题山东省德州市武城县鲁权屯镇滕庄中学等五校2023-2024学年九年级上学期第一次月考数学试题江苏省苏州市昆山市秀峰中学2023-2024学年九年级上学期10月月考数学试题(已下线)专题07 二次函数与一元二次方程(五大类型)(题型专练)-2023-2024学年九年级数学下册《知识解读·题型专练》(北师大版)
更新时间:2023-10-19 22:30:43
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】定义:平面直角坐标系
中,若点
绕原点顺时针旋转
,恰好落在函数图象
上,则称点
为函数图象
的“直旋点”.例如,点
是函数
图象的“直旋点”.
(1)在①
,②
,③
三点中,是一次函数
图象的“直旋点”的有_____(填序号);
(2)若点
为反比例函数
图象的“直旋点”,求
的值;
(3)二次函数
与
轴交于
两点(A在
的左侧),与
轴交于点
,点
是二次函数
图象的“直旋点”且在直线
上,求
点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ba3e0eafa2d163ccdca773d599b419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(1)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0e705301752424a492f6277ed7774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5986392869d5f309ad37c3f0834d3866.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d7db32e5ff96b8bb59cac3851d3c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3236d825b994ee9c28e5d5479a57b8ed.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/7f9e8449aad35c5d840a3395ea86df6d.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3236d825b994ee9c28e5d5479a57b8ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770384ad081c9f9356abd84262d1b527.png)
![](https://img.xkw.com/dksih/QBM/2018/11/4/2068447850995712/2070168678252544/STEM/f492372ef9c042f7a1f6285609cdb4fa.png?resizew=128)
求这条抛物线的对称轴,顶点坐标.
求这条抛物线与
轴的交点.
在平面直角坐标系中画出该抛物线的简图.
当
取什么值时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fed3d560fa329a5f3bf4bf50ac24c8.png)
当
取什么值时
随
增大而减少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770384ad081c9f9356abd84262d1b527.png)
![](https://img.xkw.com/dksih/QBM/2018/11/4/2068447850995712/2070168678252544/STEM/f492372ef9c042f7a1f6285609cdb4fa.png?resizew=128)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e636bddc1a3d7c006ac304e96cd2551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fed3d560fa329a5f3bf4bf50ac24c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02fbbe0d5d668d1b6dada15578302660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】已知:二次函数
的图像与
轴交于
,
两点,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/4f488850-a20a-4aa6-b32e-e0787b696060.png?resizew=124)
(1)求抛物线的函数关系式;
(2)若有一直线
:
经过点
、
,直接写出不等式
的解集;
(3)若在
轴下方的抛物线上有一动点
,使
的面积为6,请求出
点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/4f488850-a20a-4aa6-b32e-e0787b696060.png?resizew=124)
(1)求抛物线的函数关系式;
(2)若有一直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d424cefdb45cc01e778e7fdcbff90f81.png)
(3)若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在平面直角坐标系
中,已知抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192b6dcab6f4c1c97dbf0f0ba35b5f58.png)
(1)求抛物线的对称轴(用含
的式子表示》:
(2)直线
与
轴交于点
,与
轴交于点
、过点
作垂直于
轴的直线
与抛物线
有两个交点,在抛物线对称轴右侧的点记为
.
①若
的面积为
.求这条抛物线的表达式:
②当
为钝角三角形时,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192b6dcab6f4c1c97dbf0f0ba35b5f58.png)
(1)求抛物线的对称轴(用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bd144e0e96e4236a14523e0729cacb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c4f9bdae1190d17d572603937a63aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf86fc4261c2169a8910019ec3a44a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2694c32ca1e120e988012b7ecd74f625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9deca632aa429dc31c7d87bcaa477d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/d461afb3-ef7a-43ba-9942-7da29f97ef73.jpg?resizew=127)
您最近一年使用:0次