如图,在平面直角坐标系中,点
的坐标是
,在
轴上任取一点
.连接
,作线段
的垂直平分线
,过点
作
轴的垂线
,记
的交点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/dc942fcb-1de1-4274-bdb3-2d1f6edaef14.png?resizew=232)
(1)线段
与
有什么数量关系?______.
①当点
坐标
时,点
的坐标是______;
②当点
坐标
时,点
的坐标是______.
(2)在
轴上改变点
的位置,可得到不同的点
,试着把得到的点
用平滑的曲线连接起来.观察画出的曲线
,猜想它是我们学过的哪种曲线.______.
(3)验证(2)的猜想:对于曲线
上任意一点
,设点
的坐标是
,请根据
与
的关系求出
满足的关系式.你得出的结论与先前你的猜想一样吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/dc942fcb-1de1-4274-bdb3-2d1f6edaef14.png?resizew=232)
(1)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)在
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
(3)验证(2)的猜想:对于曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.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/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
更新时间:2023-12-27 17:14:33
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知点P(
,
),分别根据下列条件求出点P的坐标.
(1)点P在x轴上;
(2)点Q的坐标为(1,5),直线PQ∥y轴.
(3)点P到x轴、y轴的距离相等;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564a3336ddeba347978fee32ffb16631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7220323d7c4386960f18f6bb8108e292.png)
(1)点P在x轴上;
(2)点Q的坐标为(1,5),直线PQ∥y轴.
(3)点P到x轴、y轴的距离相等;
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,点
为坐标原点,四边形
为矩形,边
、
分别在
轴、
轴上,
,
,
,
,且
、
满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/72d6ed27-4283-4333-adce-3b27d499a4fe.png?resizew=191)
(1)求
,
两点的坐标;
(2)把
沿
翻折,点
落在
处,线段
与
轴交于点
,求
的长;
(3)在平面内是否存在点
,使以
,
,
,
为顶点的四边形是平行四边形,若存在,请直接写出点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132de9682ce9a412b7b517aa209726ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](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/3db7f3a97952ae4192dd2be17879a46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07996b782cfca0bd5c2ac233ff83651c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10db645788952b950a6e276014dc33f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1158b401ca717391b6474d457721a6fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0b45f0fc9a4d2d763ec0cd9dbebe0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/72d6ed27-4283-4333-adce-3b27d499a4fe.png?resizew=191)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4747ec744ffb25c74b664d5dfb48d45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(3)在平面内是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60051144e33707f6aa51b2fe09925268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c2bb7be2e9410a16502268fd4c67be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7909220d1db380634534190b662ee0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60051144e33707f6aa51b2fe09925268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60051144e33707f6aa51b2fe09925268.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知:一个边长为
的正方形,把它的边长延长
后得到一个新的正方形,那么,周长增大的部分
和面积增大的部分
分别是
的函数.求出这两个函数的表达式,并判定它们的类型;如果是二次函数,写出表达式中
,
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd00e8a0d30ec16562b7ffc317ffb56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf433e56b4f49d2ff9157790d3c42db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fe50eca0b86106fc83e1f71090c181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8ac91dddc9be81a4280a956e01c222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff098ac3fbbc262232b0e839f40579b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
真题
【推荐2】如图,抛物线
交
轴于
两点,与
轴交于点
,连接
.点
是第一象限内抛物线上的一个动点,点
的横坐标为
.
(1)求此抛物线的表达式;
(2)过点
作
轴,垂足为点
,
交
于点
.试探究点P在运动过程中,是否存在这样的点
,使得以
为顶点的三角形是等腰三角形.若存在,请求出此时点
的坐标,若不存在,请说明理由;
(3)过点
作
,垂足为点
.请用含
的代数式表示线段
的长,并求出当
为何值时
有最大值,最大值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6fac78e3348d8076eb0631e178861.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/e675a92cad72c65aa4071b9d9e226090.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/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求此抛物线的表达式;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3a3db6d96518255f96ad7fc1ac98f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](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/557efcd952a41e4a2ed82928445429cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a6922808e9b59352c25c341cf23851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://img.xkw.com/dksih/QBM/2019/7/8/2242442124083200/2242534354870272/STEM/2711b6e34aa043f58d7bcb1b6191f35c.png?resizew=242)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
中,
,
,
的平分线
与边
的垂直平分线
相交于点
,过点
分别作
,
,垂足分别为
、
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f3ddc1c05906d037a3fd793e1c4ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2023/1/10/3149690369687552/3150005635153920/STEM/5e15253622644b3f83a51810bf8f0c58.png?resizew=174)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】【感知】如图①,点C是AB中点,CD⊥AB,P是CD上任意一点,由三角形全等的判定方法“SAS”易证△PAC≌△PBC,得到线段垂直平分线的一条性质“线段垂直平分线上的点到线段两端的距离相等”
![](https://img.xkw.com/dksih/QBM/2019/5/17/2205803359027200/2208984392785920/STEM/5dc90b75a07f4e409cdca611112ff524.png?resizew=480)
【探究】如图②,在平面直角坐标系中,直线y=-
x+1分别交x轴、y轴于点A和点B,点C是AB中点,CD⊥AB交OA于点D,连结BD,求BD的长
【应用】如图③
(1)将线段AB绕点A顺时针旋转90°得到线段AB′,请在图③网格中画出线段AB′;
(2)若存在一点P,使得PA=PB′,且∠APB′≠90°,当点P的横、纵坐标均为整数时,则AP长度的最小值为______.
![](https://img.xkw.com/dksih/QBM/2019/5/17/2205803359027200/2208984392785920/STEM/5dc90b75a07f4e409cdca611112ff524.png?resizew=480)
【探究】如图②,在平面直角坐标系中,直线y=-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb84f6fbac102ccf326b2223d69cb7cc.png)
【应用】如图③
(1)将线段AB绕点A顺时针旋转90°得到线段AB′,请在图③网格中画出线段AB′;
(2)若存在一点P,使得PA=PB′,且∠APB′≠90°,当点P的横、纵坐标均为整数时,则AP长度的最小值为______.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】已知:在平面直角坐标系
中,
如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/07611678-5e6d-4b84-aafc-35c8c4d8a790.png?resizew=288)
(1)在y轴上找一点P,使得
的面积为
面积的一半,求点P的坐标.
(2)将
进行平移,使得点A平移到点O,作出平移后的
,并求出平移的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/07611678-5e6d-4b84-aafc-35c8c4d8a790.png?resizew=288)
(1)在y轴上找一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447b3f5ec524d86a034a30784e2a254a.png)
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解答题-问答题
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【推荐2】如图,已知一次函数
与反比例函数
的图像相交于点
,与
轴相交于点
.
(1)填空:
的值为 ,
的值为 ;
(2)观察反比函数
的图像,当
时,请直接写出自变量
的取值范围;
(3)以
为边作菱形
,使点
在
轴负半轴上,点
在第二象限内,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a4cdc721d1351682c594abb0bc3258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a3aef86adeeaa9ba955890e674a5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830f9c1697514af9f9bedeb86d7da65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)观察反比函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfb38cab2c1e56b58c9e5b1156bc33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/fb426904-5094-4d57-bd75-22bbc5989c97.png?resizew=252)
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