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1 . 如图,“心”形是由抛物线
和它绕着原点O,顺时针旋转60°的图形经过取舍而成的,其中顶点C的对应点为D,点A,B是两条抛物线的两个交点,点E,F,G是抛物线与坐标轴的交点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24cc5ce35a2fc0c3f360111250c57a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://img.xkw.com/dksih/QBM/2021/12/24/2879485606125568/2881649238745088/STEM/564e97b6-eec3-4c3c-a9b4-245b5be4dcbd.png?resizew=152)
您最近一年使用:0次
2021-12-27更新
|
506次组卷
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7卷引用:吉林省长春市朝阳区长春高新技术产业开发区慧仁学校2021-2022学年九年级下学期3月月考数学试题
吉林省长春市朝阳区长春高新技术产业开发区慧仁学校2021-2022学年九年级下学期3月月考数学试题吉林省长春市第二实验中学2022-2023学年九年级下学期阶段性测试数学试题浙江省绍兴市柯桥区八校2021-2022学年九年级上学期12月月考数学试题山东省济宁市嘉祥县第四中学2022-2023学年九年级上学期期中数学试题山东省济宁市嘉祥县2022-2023学年九年级上学期期中数学试题河南省新乡市红旗区第一中学2021-2022学年九年级上学期期末数学试题(已下线)(挑战压轴)专项2.3 二次函数的图像与性质-2022-2023学年九年级数学下册《同步考点解读·专题训练》(北师大版)
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2 . 已知关于x的二次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20204eaa7d4804f07ecdf4c73aa4de.png)
(1)求抛物线
的顶点坐标(用含m的代数式表示).
(2)抛物线
过一定点,直接写出该定点的坐标.
(3)点A(-6,1),B(4,1).若以AB为边向上作正方形ABCD.
①当抛物线
的顶点在正方形的边上时,求m的值.
②当抛物线
的顶点在正方形的内部时,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20204eaa7d4804f07ecdf4c73aa4de.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20204eaa7d4804f07ecdf4c73aa4de.png)
(2)抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20204eaa7d4804f07ecdf4c73aa4de.png)
(3)点A(-6,1),B(4,1).若以AB为边向上作正方形ABCD.
①当抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20204eaa7d4804f07ecdf4c73aa4de.png)
②当抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20204eaa7d4804f07ecdf4c73aa4de.png)
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3 . 如图,抛物线的顶点为E(﹣1,4),且过点A(﹣3,0),与y轴交于点C,点D是这条抛物线上一点,它的横坐标为m,且﹣3<m<﹣1,过点D作DK⊥x轴,垂足为K,DK分别交线段AE,AC于点G,H.
(1)求抛物线的解析式;
(2)求证:GH=HK;
(3)当△CGH是等腰三角形时,直接写出m的值.
(1)求抛物线的解析式;
(2)求证:GH=HK;
(3)当△CGH是等腰三角形时,直接写出m的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/73033527-9aa0-4da6-a625-ded41b891651.png?resizew=344)
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4 . 在平面直角坐标系中,点
,点
(
为常数,且
),将点
绕线段
中点顺时针旋转
得到点
.经过A、B、
三点的抛物线记为
.
(1)当
时,求抛物线
所对应的函数表达式.
(2)用含
的式子分别表示点
的坐标和抛物线
所对应的函数表达式.(直接写出即可)
(3)当抛物线
在直线
和
之间的部分(包括边界点)的最高点与最低点的纵坐标之差为8时,直接写出
的取值范围.
(4)连结
,点
在线段
上,过点
作
轴的平行线与抛物线
交于
、
两点,连结
、
.当点
将线段
分成1:3两部分,且
的面积为
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94eb7bfc08f338036e9d9453dc88e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3f5e979ca02d523678cfa5b8ec9199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(3)当抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-06-11更新
|
397次组卷
|
5卷引用:2021年吉林省长春市初中毕业学业考试网上阅卷模拟练习数学试题
5 . 在平面直角坐标系中,已知抛物线
(m为常数).
(1)当抛物线的顶点在第二象限时,求m的取值范围.
(2)当-2≤x≤1时,y先随x的增大而增大,后随x的增大而减小,且当x=1时y有最小值,求整数m的值
(3)当m=1时,点A是直线y=2上一点,过点A作y轴的平行线交抛物线于点B,以线段AB为边作正方形ABCD,使CD与y轴在的AB的同侧.若点C落在抛物线上,求点A的横坐标.
(4)已知
EFG三个顶点的坐标分别为E(0,1),F(0,-1),G(2,1).当抛物线与
EFG的边有两个公共点时,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbd4ff2f8272d74c3a497b9d1e61592.png)
(1)当抛物线的顶点在第二象限时,求m的取值范围.
(2)当-2≤x≤1时,y先随x的增大而增大,后随x的增大而减小,且当x=1时y有最小值,求整数m的值
(3)当m=1时,点A是直线y=2上一点,过点A作y轴的平行线交抛物线于点B,以线段AB为边作正方形ABCD,使CD与y轴在的AB的同侧.若点C落在抛物线上,求点A的横坐标.
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
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6 . (1)如图①,点C是
中点,
,P是
上任意一点,则线段
与
的数量关系是________.
(2)如图②,在平面直角坐标系中,直线
分别交x轴、y轴于点A和点B,点C是
中点,
交
于点D,连接
,求
的长.
(3)如图③,①将线段
绕点A顺时针旋转
得到线段
,请在图③网格中画出线段
;
②若存在一点P,使得
,且
,当点P的横、纵坐标均为整数时,则
长度的最小值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)如图②,在平面直角坐标系中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5986392869d5f309ad37c3f0834d3866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)如图③,①将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94dd82d1afae354ad795138fb5b6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94dd82d1afae354ad795138fb5b6919.png)
②若存在一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e47e6c60305be1f758c54e63139a5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b46dd1a5fb1ec92839d6a283628df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/2021/4/22/2705060054966272/2715904554344448/STEM/436e4675-ba8d-41bd-96f0-e82ffefea22e.png)
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7 . 如图,在等腰直角
中,
,
.动点
以每秒2个单位长度的速度沿射线
运动,过点
作
于点
,以
,
为邻边作
;
与等腰直角
的重叠部分面积为
(平方单位),
,点
与点
重合时运动停止,设点
的运动时间为
秒.
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699074257149952/2706864638681088/STEM/5b2222787f3546cf8d606c5ce3f90ba0.png?resizew=178)
(1)直接写出点
落在
边上时
的值.
(2)求
与
的函数关系式.
(3)直接写出点
与
各顶点的连线平分
面积时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37750daa8ba3b3fe3e9e2092f81c848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca0940f5c21431c089d4f7a221df43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e644a49640df670be0a53f2ba6141a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e644a49640df670be0a53f2ba6141a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699074257149952/2706864638681088/STEM/5b2222787f3546cf8d606c5ce3f90ba0.png?resizew=178)
(1)直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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8 . 如图,正方形ABCD的边AB在x轴上,点A(-2,0)点B(1,0),抛物线y=x2-4x+m与正方形有两个交点时,则m的取值范围是_______ .
![](https://img.xkw.com/dksih/QBM/2021/4/9/2696242098700288/2697008841023488/STEM/2219d493-41a0-4fb3-abe6-5bb075f820fb.png)
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2021-04-10更新
|
325次组卷
|
4卷引用:吉林省名校调研卷系列(省命题A)2020-2021学年九年级下学期第一次模拟测试数学试题
9 . 如图,A、B为抛物线y=x2上的两点,且AB//x轴,与y轴交于点C,以点O为圆心,OC为半径画圆,若AB=2
,则图中阴影部分的面积为___
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/8dedc396-d9d4-4237-a52e-ce9c36401fc8.png?resizew=164)
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2021-01-18更新
|
343次组卷
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10卷引用:吉林省白山市临江2020-2021学年九年级上学期期末数学试题
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10 . 如图,在平面直角坐标系中,抛物线y=
(x﹣1)2﹣2与x轴交于点A和点B(点A在点B的左侧),第一象限内的点C在该抛物线上.
(1)直接写出A、B两点的坐标;
(2)若
的面积为12,求点C坐标;
(3)在(2)问的条件下,直线y=mx+n经过点A、C,
(x﹣1)2﹣2>mx+n时,直接写出x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)直接写出A、B两点的坐标;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)在(2)问的条件下,直线y=mx+n经过点A、C,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/12/1863a774-2e1e-4bce-9135-1d8770249298.png?resizew=207)
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2021-01-18更新
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