1 . 抛物线
与直线
一个交点
,另一个交点B在x轴上,点P是线段
上异于A、B的一个动点,过点P做x轴的垂线,交地物线于点E;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/9b0d19a1-62c8-4c55-99ae-31d73471c27c.png?resizew=204)
(1)求抛物线的解析式;
(2)是否存在这样的点P,使线段
长度最大?若存在求出最大值及此时点P的坐标,若不存在说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1882d2f789de61b5b7e3ec952e13b99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921502954d8f4c6e58a95487018a8a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/9b0d19a1-62c8-4c55-99ae-31d73471c27c.png?resizew=204)
(1)求抛物线的解析式;
(2)是否存在这样的点P,使线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
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2 . 如图,已知抛物线
经过点
和点
,顶点为C,点D在对称轴上且位于点C下方,将线段
绕点D按顺时针方向旋转
,点C恰好落在抛物线上的点P处.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/e7569cec-2903-4fc8-b706-5ff753b0dd2a.png?resizew=195)
(1)求这条抛物线的解析式;
(2)求这条抛物线的对称轴及与x轴的另一个交点E的坐标.
(3)求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaaa558855c53e9fb3dc8bf8bf8de74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/e7569cec-2903-4fc8-b706-5ff753b0dd2a.png?resizew=195)
(1)求这条抛物线的解析式;
(2)求这条抛物线的对称轴及与x轴的另一个交点E的坐标.
(3)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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2023-02-21更新
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72次组卷
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2卷引用:山东省泰安市岱岳区2022-2023学年九年级上学期期末数学试题
3 . 如图,直线
过x轴上的点
,与y轴交于D点,与抛物线
交于B,C两点,点B坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/87786668-ef7f-4328-8b25-d182879282aa.png?resizew=165)
(1)求抛物线的函数表达式;
(2)连结
,求出
的面积.
(3)当
时,请观察图象直接写出x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501a6d50c937729c8d0f02b2b62a0ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/87786668-ef7f-4328-8b25-d182879282aa.png?resizew=165)
(1)求抛物线的函数表达式;
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbd924dd137d33a6aa3d70df0219f47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56acb9fa615f3b3b9b00b8edc0d5fa96.png)
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2023-02-21更新
|
249次组卷
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3卷引用:山东省泰安市岱岳区2022-2023学年九年级上学期期末数学试题
4 . 如图,已知抛物线与
轴交于点
,
,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/7ff7b571-afb4-460e-a892-0352b7320a78.png?resizew=120)
(1)求抛物线的解析式及其顶点
的坐标;
(2)设直线
交
轴于点
.在线段
的垂直平分线上是否存在点
,使得点
到直线
的距离等于点
到原点
的距离?如果存在,求出点
的坐标,请说明理由;
(3) 过点
作
轴的垂线,交直线
于点
,将抛物线沿其对称轴平移,使抛物线与线段
总有公共点.试探究:抛物线向上最多可平移多少个单位长度?向下最多可平移多少个单位长度?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/865638eb4f3818d76cd28a045b70e17d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/7ff7b571-afb4-460e-a892-0352b7320a78.png?resizew=120)
(1)求抛物线的解析式及其顶点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3) 过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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5 . 下表中列出的是一个二次函数的自变量
与函数
的几组对应值:
下列各选项中,不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
A.这个函数的图象开口向上 | B.这个函数的图象与![]() |
C.这个函数的最小值小于![]() | D.当![]() ![]() ![]() |
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6 . 已知:抛物线
经过
三点.
(2)如图1,点P为直线
上方抛物线上任意一点,连接
,
交直线
于点E,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f8083b831fde97c3b121b30285f8d3.png)
,求当k取最大值时点P的坐标,并求此时k的值.
(3)如图2,点Q为抛物线对称轴与x轴的交点,点C关于x轴的对称点为点D.求
的周长及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f2638d71e5d00c241c6704b32094d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12c52e28bf4246a8322d11b58a3a839.png)
(2)如图1,点P为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d551e7b340e216431f244a319d4890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73be30f639b301cf797d6e8d04a568d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f8083b831fde97c3b121b30285f8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c009ede1c7a94d159c2394a849e156f3.png)
(3)如图2,点Q为抛物线对称轴与x轴的交点,点C关于x轴的对称点为点D.求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db13aadcb5388a86db1e298549759b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561449adba15c3dac565fcd53b1c1697.png)
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2022-12-16更新
|
113次组卷
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2卷引用:山东省泰安市肥城市2021-2022学年九年级上学期期末数学试题
7 . 如图,在直角坐标系中,抛物线经过点
、
、
三点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/9d401e37-5c71-468d-8592-685b067b5ccd.png?resizew=178)
(1)求抛物线的解析式和对称轴;
(2)
是抛物线对称轴上的一点,求满足
的值为最小的点
坐标;
(3)在第四象限的抛物线上是否存在点
,使四边形
是以
为对角线且面积为
的平行四边形?若存在,请求出点
坐标,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fe2c124d5bbbbe666ee145cd454b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc03fafb03395ed84030f03c5d93aa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/9d401e37-5c71-468d-8592-685b067b5ccd.png?resizew=178)
(1)求抛物线的解析式和对称轴;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在第四象限的抛物线上是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0463da43878c8c9848d921ecf77f1ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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8 . 如图,已知抛物线
的图象与x轴的一个交点为
,另一个交点为A,且与y轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/c8595576-0a40-4a35-b0c5-1ebf023bb107.png?resizew=303)
(1)求直线
与抛物线的解析式;
(2)若点M是抛物线在x轴下方图象上的一动点,过点M作
轴交直线
于点N,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fe2c124d5bbbbe666ee145cd454b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae21af7fed9542fc7b83baa24f28060.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/c8595576-0a40-4a35-b0c5-1ebf023bb107.png?resizew=303)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若点M是抛物线在x轴下方图象上的一动点,过点M作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf20f734ac54ab0eec2e1c170a3a24f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2022-12-07更新
|
192次组卷
|
2卷引用:山东省泰安市岱岳区道朗镇第一中学2022-2023学年九年级上学期期末数学试题
9 . 如图1,在平面直角坐标系中,抛物线
与
轴交于
、
两点,与
轴负半轴交于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/5d77717c-9957-423d-b1b8-bab5e9bdad91.png?resizew=523)
(1)试求抛物线的解析式;
(2)如图2,点
为抛物线上第一象限内一点,过点
作
轴的平行线,交直线
于点
,当
时,求
点的坐标及此时
的面积;
(3)如图3,直线
与
轴交于点
,与抛物线交于第四象限的点
,与直线
交于点
,记
,请判断
是否有最大值,如有请求出
取最大值时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd69aebdafb31468eb13ce3b28a36e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.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/84acb42778406c1a60d818f6ca760366.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/5d77717c-9957-423d-b1b8-bab5e9bdad91.png?resizew=523)
(1)试求抛物线的解析式;
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859011bd678f0346f19808bc299de608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8617a520589aa336b0c4725d4fd1c7d6.png)
(3)如图3,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231896d2386c924306fce5ccf9f9e8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd5573b36608e724b88e96fa0ce353e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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10 . 将抛物线
先向下平移3个单位,再向右平移
个单位,所得新抛物线经过点
.新抛物线的表达式为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/108c18cb76d7d34b05c991a644c8b136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93a232c88870d213a7b74a796a1ff4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4559e8b5861ebbf7c0f5c6d9a819f97.png)
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2022-12-05更新
|
149次组卷
|
3卷引用:山东省泰安市新泰市2022-2023学年九年级上学期期中数学试题
山东省泰安市新泰市2022-2023学年九年级上学期期中数学试题(已下线)2.3 确定二次函数的表达式(分层练习)-2022-2023学年九年级数学下册同步精品课堂(北师大版)四川省广元市利州区2022-2023学年九年级上学期期中考试数学试题