1 . 已知二次函数的图象以
为顶点,且过点
.
(1)求该函数与x轴的交点坐标;
(2)将该函数图象向右平移,当图象经过原点时,A、B两点随图象移至![](https://img.xkw.com/dksih/QBM/2020/10/15/2571323216240640/2572182170763264/STEM/d96be774ce7049aea3715511eabc577e.png?resizew=9)
、
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3305ac6ef7117a61b3ed9fffb03030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f208b66a3cb7e52efca293f3828db30.png)
(1)求该函数与x轴的交点坐标;
(2)将该函数图象向右平移,当图象经过原点时,A、B两点随图象移至
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571323216240640/2572182170763264/STEM/d96be774ce7049aea3715511eabc577e.png?resizew=9)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e566f7f3b5d48480f1750ce7df8369ec.png)
您最近一年使用:0次
解题方法
2 . 如图,在平面直角坐标系中,抛物线
交
轴负半轴于点
交
轴正半轴于点
,交
轴正半轴于点
.
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532745802514432/2558570528063488/STEM/ae8a0b0c533149a4b175c8b6cd7ad400.png?resizew=182)
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532745802514432/2558570528063488/STEM/5214674d5bd44d1e8297137fe41da7a1.png?resizew=193)
求抛物线的解析式;
点
为第一象限抛物线上一点,过点
作
于点
.连接
交
轴于点
.过点
作
于点
设点
的横坐标为
的长度为
求
与
之间的函数关系式(不要求写出自变量
的取值范围);
在
的条件下,过点
作
交
的延长线于点
点
在线段
上,连接
将
沿
折叠后,点
的对称点为点
交
于点
连接
并延长交
的延长线于点
当
时,求直线
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ffd25dfc589c6698770e7d0af94318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/730730f9478b1e257a155f0333e6d7e6.png)
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532745802514432/2558570528063488/STEM/ae8a0b0c533149a4b175c8b6cd7ad400.png?resizew=182)
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532745802514432/2558570528063488/STEM/5214674d5bd44d1e8297137fe41da7a1.png?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.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/545e18836bc7fee22f8f813a6f525d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/873881be2da23ad3840d32f73898d039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f930c4c7939427810faa04e88c566316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b53bd66d786305d295dd088100e455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7cb9fef4d5f2e8f3d99976ca14b04bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.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/f62295c36d2e2174908c2bec0eb5b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec254ca6338afb57a16e321a4d3a5e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5c664aa79a88c035d7ece15220a4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705070d183376ea908a854fb46e607f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8191c44b5490379bf7be07bb81d3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42715ebf3416b9e36b7c02afe54c62af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98914a2f34d457acf18e36d3b6eac5f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359e391ede9940746f94475527d862ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb365644c0ce774f7017ace653fd8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
真题
名校
3 . 如图,抛物线y=ax2+bx+2与x轴交于A,B两点,且OA=2OB,与y轴交于点C,连接BC,抛物线对称轴为直线x=
,D为第一象限内抛物线上一动点,过点D作DE⊥OA于点E,与AC交于点F,设点D的横坐标为m.
(1)求抛物线的表达式;
(2)当线段DF的长度最大时,求D点的坐标;
(3)抛物线上是否存在点D,使得以点O,D,E为顶点的三角形与
相似?若存在,求出m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求抛物线的表达式;
(2)当线段DF的长度最大时,求D点的坐标;
(3)抛物线上是否存在点D,使得以点O,D,E为顶点的三角形与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
您最近一年使用:0次
2020-08-04更新
|
2671次组卷
|
25卷引用:黑龙江省大庆市肇源县2021-2022学年九年级上学期期末数学试题
黑龙江省大庆市肇源县2021-2022学年九年级上学期期末数学试题黑龙江省大庆市肇源县西部四校2023-2024学年九年级下学期开学考试数学试题山东省烟台市2020年中考数学试题山东省聊城市茌平区振兴中学2020-2021学年九年级上学期第二次月考数学试题2021年山东省临沂市中考数学模拟试题(一) 2021年山东省济宁市中考数学一模试题2021年新疆塔城地区乌苏市中考一模练习数学试题2021年山东省乐陵市中考一模数学试题(已下线)【万唯原创】2021年山西省面对面-讲册第二部分-专题七 7(已下线)【万唯原创】2021年山西专项集训-解答题专项-第一部分题型9类型5(已下线)专题04 二次函数与相似问题-挑战2022年中考数学压轴题之学霸秘笈大揭秘2022年湖北省随州市高新区中考数学第一次联考试题山东省泰安市东平县2021-2022学年九年级上学期期末数学试题山东省枣庄市薛城区北临城中学2021-2022学年九年级下学期3月月考数学试题(一模)2022年山东省枣庄市薛城区九年级中考数学模拟试题安徽省滁州市定远县郭集学校等三校2022-2023学年九年级上学期月考数学试卷(12月份)(已下线)安徽省滁州市定远县池河中学2022-2023学年九年级数学上学期第三次月考测试题山东省烟台市莱山区2020-2021学年九年级上学期期中数学试题2023年山西省朔州市朔城区中考一模数学试题2023年山东省济宁市泗水县中考二模数学试题福建省龙岩市初级中学2020-2021学年九年级下学期第一次月考数学试题(已下线)2023年山西一模(二次函数综合)江西省九江市都昌县2023-2024学年九年级上学期期末数学试题2023年山东省枣庄市九年级数学中考复习模拟预测题山东省德州市宁津县孟集中学2023-2024学年九年级下学期第一次月考数学试题
真题
4 . 如图,已知二次函数
与
轴交于
、
两点(点
位于点
的左侧),与
轴交于点
,已知
的面积是6.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/3610e22a-497a-4f1e-a945-3f90af89cec2.png?resizew=152)
(1)求
的值;
(2)在抛物线上是否存在一点
,使
.存在请求出
坐标,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f70cd988388637fb505669d170d63df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/228a8e89aa8e53c569bdd03d2fe61b6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/3610e22a-497a-4f1e-a945-3f90af89cec2.png?resizew=152)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在抛物线上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf6e5b1d644b99cc8cb40349bad4499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2020-07-26更新
|
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10卷引用:黑龙江省鹤岗市2020年中考数学试题
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5 . 如图1(注:与图2完全相同)所示,抛物线
经过B、D两点,与x轴的另一个交点为A,与y轴相交于点C.
(1)求抛物线的解析式.
(2)设抛物线的顶点为M,求四边形ABMC的面积(请在图1中探索)
(3)设点Q在y轴上,点P在抛物线上.要使以点A、B、P、Q为顶点的四边形是平行四边形,求所有满足条件的点P的坐标(请在图2中探索)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
(1)求抛物线的解析式.
(2)设抛物线的顶点为M,求四边形ABMC的面积(请在图1中探索)
(3)设点Q在y轴上,点P在抛物线上.要使以点A、B、P、Q为顶点的四边形是平行四边形,求所有满足条件的点P的坐标(请在图2中探索)
![](https://img.xkw.com/dksih/QBM/2020/7/24/2512835859996672/2513570536366080/STEM/b43bf643-2e7e-438c-8ff8-b09b241662a7.png)
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2020-07-25更新
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2223次组卷
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10卷引用:黑龙江省佳木斯市郊区2021-2022学年九年级上学期期末考试数学试题
黑龙江省佳木斯市郊区2021-2022学年九年级上学期期末考试数学试题青海省2020年中考数学试题广东省汕头市潮南区三校联考2020-2021学年九年级上学期第一次月考数学试题(已下线)非选择题专练07 函数综合—2021年《三步冲刺中考·数学》(广东专版)之第2步大题夺高分(已下线)必刷卷01-2021年中考数学考前信息必刷卷(广东专用)(已下线)重难点07(2) 函数类综合问题-2021年中考数学【热点·重点·难点】专练河北省保定市定州市2021-2022学年九年级上学期期中数学试题2021年新疆乌鲁木齐市农业大学附属中学中考第一次模拟考试数学试题 山东省淄博市高青县(五四制)2020-2021学年九年级上学期期中考试数学试题江苏省苏州市高新区实验初级中学2023-2024学年九年级上学期第一次月考数学试题
真题
6 . 已知抛物线y=a(x-2)2+c经过点A(-2,0)和点C(0,
),与x轴交于另一点B,顶点为D.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/39d651ab-112d-45f8-b17c-e14211269c9a.png?resizew=225)
(1)求抛物线的解析式,并写出顶点D的坐标;
(2)如图,点E,F分别在线段AB,BD上(点E不与点A,B重合),且∠DEF=∠DAB,DE=EF,直接写出线段BE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31da7291140e430a11e2a10cc6cdefbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/39d651ab-112d-45f8-b17c-e14211269c9a.png?resizew=225)
(1)求抛物线的解析式,并写出顶点D的坐标;
(2)如图,点E,F分别在线段AB,BD上(点E不与点A,B重合),且∠DEF=∠DAB,DE=EF,直接写出线段BE的长.
您最近一年使用:0次
7 . 如图,过点F(0,
)的直线与抛物线y=
x2(P>0)交于A,B两点,与x轴和直线y=-
分别交于M,N两点,F为AN的中点.已知抛物线上的点到点F的距离与到直线y=-
的距离相等,若AB的长为
,则p的值为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459b26b8a4ae77f815ee37ed90ea8d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba2502a3dd2361a52a6f8dc300f3958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459b26b8a4ae77f815ee37ed90ea8d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459b26b8a4ae77f815ee37ed90ea8d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292b791c7cf21c172e6e7f97f04be176.png)
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500110265040896/2501672744960000/STEM/f381e4e0-9165-4c13-beda-8a54653b3315.png)
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8 . 抛物线
与
轴交于点
,交
轴于点
的长为
.
(1)求抛物线的解析式;
(2)点
是第一象限抛物线上的一点,直线
交
轴于
,设点
的横坐标为
的长为
,用含
的式子表示
;
(3)在
的条件下,过点
作
交
轴于点
,点
在
上,连接
交抛物线于点
,点
在
轴上,
,连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b979e9dbad82022fef85612174e5a5d7.png)
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e9fc8a1b11b987b013b1d66ab2388c.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b368aa0a9bd8d05172d13f7718afbcbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb741b7780574e328d524f67b87ede6c.png)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.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/e9c72ad2d1204639251681db658a19db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a92bf37efe386e969621baf38d1eb1a.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5cb01647bbccc3da0218d222c67b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fb13c668f63749e2401d6d47c7d727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b979e9dbad82022fef85612174e5a5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9f73a4e75f36aec4fbc044dc79192b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/2020/5/22/2468201646080000/2469580522594304/STEM/826106ea6a274f328d2ac340a4e0b7cb.png?resizew=509)
您最近一年使用:0次
2012·山东淄博·一模
名校
9 . 如图,已知菱形
的边长为2
,
,点M从点A出发,以1
的速度向点B运动,点N从点A同时出发,以2
的速度经过点D向点C运动,当其中一个动点到达端点时,另一个动点也随之停止运动.则
的面积
与点M运动的时间
的函数的图象大致是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacd892f03da01942140679667792250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fb80b591b497d8d7a6d8592160de44.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-05-08更新
|
330次组卷
|
9卷引用:2021年黑龙江省齐齐哈尔市建华区九年级下学期学业考试数学试题(二模)
名校
解题方法
10 . 在平面直角坐标系中,点
为坐标原点,抛物线
与
轴交于点
(点
在点
的左侧),与
轴正半轴交于点
,
.
(1)如图1,求
的值;
(2)如图2,抛物线的顶点坐标是
,点
是第一象限抛物线上的一点,连接
交抛物线的对称轴于点
,设点
的横坐标是
,线段
的长为
,求
与
的函数关系式;
(3)如图3,在(2)的条件下,当
时,过点
作
轴交抛物线于点
,点
是
轴下方抛物线上的一个动点,连接
交
轴于点
,直线
经过点
交
于点
,连接
,过点
作
交
于点
,若
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f331e6e5cf8d0a9fcde44c5760c76b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e478787ebfeb68a5a7594dbd9eecd4.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1140285efa7673033b84e71e271d289.png)
(1)如图1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e32f28f5c2705d8dc327f383f5108db.png)
(2)如图2,抛物线的顶点坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图3,在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ff18065aed6c5d689b14a51ea1745e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613db164709e4a57712ff69c976dbcbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f090cffacc6af0bc8e37753e63fe66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8243413e2f844823a2e0fcf5a8e1d49d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25bdeaf70c2e394e6d9a29cbf89bbd0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2020/5/3/2454826868826112/2455574125461504/STEM/0f5659f4-3a52-49cb-9856-3b325b98e92f.png)
您最近一年使用:0次