如图1所示,平面直角坐标系中,抛物线
交x轴于A、B两点,与y轴交于点C,已知点A坐标为
.
(2)若将抛物线向右平移m个单位,得新抛物线“V”,若“V”与坐标轴仅有两个交点,求m值.
(3)若点M为线段
上一动点,过点M作y轴平行线,该平行线与“V”交点为N,请直接写出点N的纵坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e71461c5134339b5b54a80e588640f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d1b0e316f658f4ffe056511101614d.png)
(2)若将抛物线向右平移m个单位,得新抛物线“V”,若“V”与坐标轴仅有两个交点,求m值.
(3)若点M为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9070c218a98fd79ec3aa59b4421d89b0.png)
2023·河南驻马店·二模 查看更多[3]
更新时间:2023-04-30 10:47:20
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相似题推荐
解答题-问答题
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适中
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【推荐1】在平面直角坐标系中,设二次函数
,其中
.
(1)若函数
的图像经过点
,求函数
的表达式;
(2)已知点
和
在函数
的图像上,若
,求
的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf82e0452bad610360cb5257797e7ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891caed81d431eaaa90c3b95c26ada05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc80761d8889f3a4272e6210f74a3017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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解答题-问答题
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适中
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【推荐2】抛物线
与
轴交于
,
(1)求
的值;
(2)求抛物线与
轴的交点坐标及顶点坐标;
(3)当
取何值时,抛物线在
轴上方?
(4)当
取何值时,
随
的增大而增大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1be7c1888168829b95f01a02b65ae13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051e525ab49c10a1cdddbb248d167827.png)
(1)求
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(2)求抛物线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(4)当
![](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】如图,在平面直角坐标系xOy中,抛物线C1:y=a(x-
)2+h分别与x轴、y轴交于点A(1,0)和点B(0,-2),将线段AB绕点A逆时针旋转90°至AP.
![](https://img.xkw.com/dksih/QBM/2015/11/18/1573929820995584/1573929826525184/STEM/ce0bfdd2d75a49b5ad4711b2970128a7.png?resizew=186)
(1)求点P的坐标及抛物线C1的解析式;
(2)将抛物线C1先向左平移2个单位,再向上平移1个单位得到抛物线C2,请你判断点P是否在抛物线C2上,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1573929820995584/1573929826525184/STEM/ce0bfdd2d75a49b5ad4711b2970128a7.png?resizew=186)
(1)求点P的坐标及抛物线C1的解析式;
(2)将抛物线C1先向左平移2个单位,再向上平移1个单位得到抛物线C2,请你判断点P是否在抛物线C2上,并说明理由.
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【推荐2】已知抛物线
.请按照要求写出符合条件的抛物线的解析式.
(1)若抛物线
与
关于
轴对称,则
= ;
(2)若抛物线
与
关于
轴对称,则
= ;
(3)若抛物线
与
关于坐标原点对称,则
= ;
(4)若抛物线
是由
绕着点P(1,0)旋转180°后所得,则
= .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80baeafa5f602c53b052295a95f3302.png)
(1)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
(2)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(3)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
(4)若抛物线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ee8fc80a880ccceac24aa739fac39.png)
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适中
(0.65)
名校
【推荐1】如图,抛物线
经过点
和点
,与x轴另外一个交点为B.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/0b1baee8-1367-497b-9be7-085d55f8310a.png?resizew=187)
(1)求此抛物线的解析式;
(2)若顶点为D,求点D的坐标;
(3)当
时,求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f752d0257c9aae75e212755abc1b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3753d0398d928502dd8b59e759737da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/0b1baee8-1367-497b-9be7-085d55f8310a.png?resizew=187)
(1)求此抛物线的解析式;
(2)若顶点为D,求点D的坐标;
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】已知二次函数
(m是实数).
(1)小明说:当m的值变化时,二次函数图象的顶点始终在一条直线上运动,你认同他的说法吗?为什么?
(2)已知点
,
都在该二次函数图象上,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda373a0612e14a1b3b7cfbbfff65f63.png)
(1)小明说:当m的值变化时,二次函数图象的顶点始终在一条直线上运动,你认同他的说法吗?为什么?
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748bc7c0405e8a1cc00fe61d48f05c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414e7bd1020830edd96b7b8418493403.png)
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解答题-问答题
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适中
(0.65)
名校
【推荐1】如图,已知:二次函数y=x2+bx+c 的图象与x轴交于A,B两点,其中A点坐标为(-3,0),与 y 轴交于点 C(0,-3)在抛物线上.
(1)求抛物线的表达式;
(2)抛物线的对称轴上有一动点 P,求出当 PB+PC 最小时点 P的坐标;
(3)若抛物线上有一动点Q,使△ABQ的面积为6,求Q点坐标.
(1)求抛物线的表达式;
(2)抛物线的对称轴上有一动点 P,求出当 PB+PC 最小时点 P的坐标;
(3)若抛物线上有一动点Q,使△ABQ的面积为6,求Q点坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/26/94d20129-a0ef-45ed-9650-8f3fff756cb2.png?resizew=140)
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解答题-问答题
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适中
(0.65)
【推荐2】已知:二次函数
.
(1)求证:不论
为何实数时,此二次函数与
轴总有交点;
(2)设
,当二次函数
的图象与
轴的两个交点
间的距离为
时,求此二次函数的解析式;
(3)在(
)的条件下,若抛物线的顶点为
,过
轴上一点
作
轴的垂线
,当
为何值时,直线
与
的外接圆有公共点?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a103fc09f448449af23b98f2dd08228.png)
(1)求证:不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a4eaa80b44625890339d6a0065c241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a103fc09f448449af23b98f2dd08228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
(3)在(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9b8f4065fdf8cd63217916b27d2ba0.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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