名校
1 . 如图1,在正方形
(正方形四边相等,四个角均为直角)中,
,P为线段
上一点,连接
,过B作
,交
于点Q,将
沿
所在的直线对折得到
,延长
交
于点N.
;
(2)若
,求
的长;
(3)如图2,延长
交
的延长线于点M,若
,
的面积为s,求s与x之间的函数关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cfc81f5df5b164223424a6b2370714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d308e5a0882c149bcb0029198af9150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81efd8e471483f95c80f0be8e677da32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6db7e3845eb40841290768df39bafc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cdc346d78b31a196d99e910b39469e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccb146c1692528caaf5548752bcb5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
(3)如图2,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c825740d2e371bd49cbc059bdf73cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b488898c6eaacbb0035a239decae6113.png)
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2 . 如图,在平面直角坐标系中,抛物线
经过
,
,
.
(1)请写出抛物线的解析式为__________.
(2)若
是抛物线对称轴上一动点,请写出使
周长最小的
点的坐标为__________.
(3)点
在抛物线的对称轴上,点
在
轴上,请写出,使得以
,
,
,
为顶点的四边形是平行四边形的点
的坐标为__________.
(4)若点
为第一象限内抛物线上的一动点,点
的横坐标为
,请求出使点
到直线
距离最大的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d03fa28c117649b0fdfe17eed7b583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62855ff21228ecea8e28fd0fbeb814ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/7e9d7d2e-2143-4202-8f21-6756f9a2536f.png?resizew=169)
(1)请写出抛物线的解析式为__________.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283aed8df8289ef4f086edde6d3cdf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(4)若点
![](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/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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5卷引用:专题26.1 全册综合测试卷-2023-2024学年九年级数学上册举一反三系列(人教版)
(已下线)专题26.1 全册综合测试卷-2023-2024学年九年级数学上册举一反三系列(人教版)(已下线)专题24.1 全册综合测试卷-2023-2024学年九年级数学上册举一反三系列(沪科版)(已下线)专题5.1 全册综合测试卷-2023-2024学年九年级数学上册举一反三系列(浙教版)安徽省部分市县2021-2022学年九年级上学期期末数学试题广东省雷州市第八中学2023-2024学年九年级上学期期中数学试题
3 . 如图,计划利用长为a米的篱笆,再借助外墙围成一个矩形栅栏,设矩形
的边
长为x米,面积为y平方米.
(1)若
,墙长为
米,求出y与x之间的关系,并指出x的取值范围;
(2)在(1)的条件下,矩形
的面积能达到
平方米吗?说明理由;
(3)当x与a满足什么关系时,栅栏围出的面积最大?最大值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/27/88163fbb-968d-44a1-828e-48b300cdafc1.png?resizew=293)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a110bb6e761a161260c92dea2121d2db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
(2)在(1)的条件下,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f0e3992efedab109b99e6e172e6238.png)
(3)当x与a满足什么关系时,栅栏围出的面积最大?最大值是多少?
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6卷引用:专题08 二次函数应用(六大类型)(题型专练)-2023-2024学年九年级数学上册《知识解读·题型专练》(人教版)
(已下线)专题08 二次函数应用(六大类型)(题型专练)-2023-2024学年九年级数学上册《知识解读·题型专练》(人教版)(已下线)专题08 二次函数应用(六大类型)(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)2023年广东省佛山市高明区中考二模数学试卷2023年广东省佛山市顺德区中考二模数学试卷(已下线)第08讲 二次函数的实际应用(六大类型)(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(浙教版)(已下线)专题08 二次函数应用(六大类型)(题型专练)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)
4 . 如图,抛物线
与x轴交于
,
两点,与
轴交于点
.
(1)求抛物线的解析式;
(2)若在线段
上存在一点
,使得
,过点
作
交
的延长线于点
,求点
的坐标;
(3)在(2)的条件下,点
是
轴正半轴上的一个动点,连接
,过
做
交
轴与
,
是
的中点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b50b33875af1433e9fa2de88530432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.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/2023/5/23/ad5e884c-3340-400a-9a09-e4ca4a4a758a.png?resizew=406)
(1)求抛物线的解析式;
(2)若在线段
![](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/8865cfc54688a0b6ef16241a7b97f2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4372700e7f8e5c755c8ad71671224b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(3)在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0dd9872c8ff29ba1b2f889e224b3edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
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3卷引用:2023年山东省济南市天桥区中考二模数学试题
名校
5 . 如图1所示的矩形窗框
的周长及其两条隔断
、
的总长为
米,且隔断
、
分别与矩形的两条邻边平行,设
的长为
米,矩形
的面积为
平方米,
关于
的函数图像如图2,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/36be6e96-758e-425e-ad23-dd4b87fecb28.png?resizew=271)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/36be6e96-758e-425e-ad23-dd4b87fecb28.png?resizew=271)
A.矩形![]() | B.![]() ![]() ![]() |
C.当![]() ![]() | D.![]() |
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5卷引用:2023年陕西省宝鸡市陈仓区中考二模数学试卷
6 . 如图所示,在
中,
,
,
.
为
的内接正方形,则正方形
的边长
为______ ;
(2)若四边形
为
的内接矩形,当这个矩形面积最大时,则矩形
的边长
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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7 . 如图,某小区有一块靠墙(墙的长度不限)的矩形空地
,为美化环境,用总长为100米的篱笆围成三块面积相等的矩形花圃(靠墙一侧不用篱笆,篱笆的厚度不计).当矩形
的边
为多长时,矩形区域
的面积最大?其最大面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/2/a584581b-a943-46a4-935f-120724157c58.png?resizew=187)
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8 . 如图是一块美术小组使用剩余的画布,将其放置在平面直角坐标系中,底部边缘
在x轴上,且
,外轮廓线是抛物线的一部分,对称轴为y轴,高度
,美术小组计划进行裁剪:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/cbc1ffef-2b3a-43cf-8b16-aca331790d67.png?resizew=208)
(1)若裁剪成正方形,要求一边在底部边缘
上且面积最大,求此正方形的边长;
(2)若裁剪成矩形,要求一边在底部边缘
上且周长最大,求此矩形的周长;
(3)若裁剪成圆,判断能否裁剪出半径为
的圆,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3614c5e351287527447998a15f749f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace7098e3cdb24b089c73ea1785bfa66.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/cbc1ffef-2b3a-43cf-8b16-aca331790d67.png?resizew=208)
(1)若裁剪成正方形,要求一边在底部边缘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若裁剪成矩形,要求一边在底部边缘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)若裁剪成圆,判断能否裁剪出半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ba808b096af28663c77e48fb808f1f.png)
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9 . 如图,在一面靠墙(墙长不限)的空地上用长为
米的篱笆围成中间隔有两道篱笆的矩形鸡场,则所围鸡场最大面积为______ 平方米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/304dbf0e-0b8c-4a08-ac84-ef0e235b2b8d.png?resizew=200)
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2023九年级下·全国·专题练习
10 . 如图,一农户要建一个矩形鸡舍,为了节省材料鸡舍的一边利用长为a米的墙,另外三边用长为27米的建筑材料围成,为方便进出,在垂直墙的一边留下一个宽1米的门.设
米时,鸡舍面积为S平方米.
![](https://img.xkw.com/dksih/QBM/2023/4/27/3225489125244928/3225634694479872/STEM/42459c7689f04424bd6f3c18ad579f32.png?resizew=201)
(1)求S关于x的函数表达式及x的取值范围.
(2)在(1)的条件下,当
为多少时,鸡舍的面积为90平方米?
(3)若住房墙的长度足够长,问鸡舍面积能否达到100平方米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7a3d679b4dae63575903387a76ce45.png)
![](https://img.xkw.com/dksih/QBM/2023/4/27/3225489125244928/3225634694479872/STEM/42459c7689f04424bd6f3c18ad579f32.png?resizew=201)
(1)求S关于x的函数表达式及x的取值范围.
(2)在(1)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)若住房墙的长度足够长,问鸡舍面积能否达到100平方米?
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2023-04-27更新
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545次组卷
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4卷引用:专题2.4 二次函数的实际应用-几何问题(专项训练)-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)
(已下线)专题2.4 二次函数的实际应用-几何问题(专项训练)-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)(已下线)数学(湖南长沙卷)-学易金卷:2023年中考考前押题密卷(含考试版、全解全析、参考答案、答题卡)(已下线)第10讲 实际问题与二次函数-【暑假自学课】2023年新九年级数学暑假精品课(人教版)(已下线)第19讲 二次函数的应用-【暑假自学课】2023年新九年级数学暑假精品课(沪教版,上海专用)