在练习“一次函数”复习题时,我们发现了一种新的函数:“绝对值函数”:
,请类比探究函数
.
(1)当
时,
______,当
时,
______
用含
的代数式表示
;
(2)过
轴上的动点
,其中
,作平行于
轴的直线,分别与函数
的图像相交于
、
两点
点
在点
的左侧
,若
,求
的值;
(3)若一次函数
图像与函数
的图像相交于
、
两点,
,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10306d2741184823a1784f3f26c73343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33b41fd85266662898b6b40df44527b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296c31eaede57efe89ffb83f02ad4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fb51c831740d9fe307c03537080448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33b41fd85266662898b6b40df44527b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0cdfb6d592897c6485ce1741677846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87490be8d0cdb7bc6c39d1a37f3bc335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33b41fd85266662898b6b40df44527b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf8e1c3f6e76b1b418556c07652612c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
21-22八年级下·江苏南通·期末 查看更多[5]
江苏省南通市海安市2021-2022学年八年级下学期期末数学试题(已下线)江苏八年级上学期期末【压轴60题考点专练】-2022-2023学年八年级数学上学期考试满分全攻略(苏科版)(已下线)清单15 一次函数与方程、不等式 (10种题型解读+提升训练)-2023-2024学年八年级数学上学期期末考点大串讲(苏科版)(已下线)专题04一次函数的应用与几何综合问题(五大类型)-【好题汇编】备战2023-2024学年八年级数学上学期期末真题分类汇编(苏科版)江苏省启东市折桂中学2023-2024学年八年级下学期第一次综合训练数学试题
更新时间:2022-07-28 00:33:37
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【推荐1】在平面直角坐标系中,P是平面内任意一点(坐标轴上的点除外),过点P分别作x轴,y轴的垂线,如果由点P、原点、两个垂足这4个点为顶点的矩形的周长与面积相等,那么称这个点P是平面直角坐标系中的“奇点”.例如:如图①,过点P(4,4)分别作x轴,y轴的垂线,垂足分别为A,B,矩形OAPB的周长为16,面积也为16,周长与面积相等,所以点P是奇点.请根据以上材料回答下列问题:
(1)已知点C(2,2)、D(-4,-4)、E(
,-5),其中是平面直角坐标系中的奇点的有 ;(填字母代号)
(2)我们可以从函数的角度研究奇点.已知点P(x,y)是第一象限 内的奇点.
I.求y关于x的函数表达式,并写出自变量x的取值范围;
II.借鉴研究一次函数和反比例函数的经验,类似地可以对I中所求出的函数的图像和性质进行探索,下列结论正确的是 (填写所有正确的序号);
①图像与坐标轴没有交点
②在第一象限内,y随着x的增大而减小
③对于图像上任意一点(x,y),(x-2)·(y-2)是一个定值
(3)在第一象限 内,直线y=kx+8(k为常数)上奇点的个数随着k的值变化而变化,直接写出奇点的个数及对应的k的取值范围.
(1)已知点C(2,2)、D(-4,-4)、E(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5991e9ec7666f533a528a4173c58f0ff.png)
(2)我们可以从函数的角度研究奇点.已知点P(x,y)是
I.求y关于x的函数表达式,并写出自变量x的取值范围;
II.借鉴研究一次函数和反比例函数的经验,类似地可以对I中所求出的函数的图像和性质进行探索,下列结论正确的是 (填写所有正确的序号);
①图像与坐标轴没有交点
②在第一象限内,y随着x的增大而减小
③对于图像上任意一点(x,y),(x-2)·(y-2)是一个定值
(3)在
![](https://img.xkw.com/dksih/QBM/2020/7/18/2508677710381056/2509444194844672/STEM/5cbfd60b0ec948bead33bf70e9318fe5.png?resizew=325)
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【推荐2】在平面直角坐标系
中,
如图所示,点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/492ad150-c83e-4e9b-9926-9057c90368af.png?resizew=169)
(1)求直线
的解析式;
(2)求
的面积;
(3)一次函数
(
为常数).
①求证:一次函数
的图象一定经过点
;
②若一次函数
的图象与线段
有交点,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9301f5c1c4d6b9249e06a9e1ee711df9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/492ad150-c83e-4e9b-9926-9057c90368af.png?resizew=169)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(3)一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e84a643d5b9cd34cef768c2bf2991de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
①求证:一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e84a643d5b9cd34cef768c2bf2991de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
②若一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e84a643d5b9cd34cef768c2bf2991de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】定义:对于两个关于
的函数,如果存在
取某一值时,两个函数的函数值相等,那么称两个函数互为“明盟函数”,其中
的值叫做这两个函数的“明盟点”,相等的函数值叫做“明盟值”.例如:对于函数
与
,当
时,
.因此,
、
互为“明盟函数”,
是这两个函数的“明盟点”,“明盟值”为2.
(1)下列函数中是
的“明盟函数”的有 (填序号);
①
;②
;③
.
(2)已知函数
与函数
,若
与
只存在一个“明盟点”,求
的值或取值范围;
(3)若无论
取何值,
(
为常数),与函数
(
为常数,
)始终是“明盟函数”,且只有一个“明盟点”,求
的值以及“明盟值”的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ff206d48c26c836ddeecebb83f8b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec56d55e15e862a0a94d4eff20e194e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3706c8575b004154908c34c973feba03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)下列函数中是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4407788e4dc88210bca71a2551d4f2f9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b629bea8e22de9bfc49158e2289871.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c598a3fde00a428902b9b2792f5a741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a091ff82fba89cebeb7131356713e0e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f174e5f6a421345d6825b1057fdf2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595044a7750ab4f84519041979c3d780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76da5f11d7f57a65ebfb757dc31100b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff63674643084f72c4f1beb45951af58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595044a7750ab4f84519041979c3d780.png)
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名校
【推荐1】如图,直线AB交x轴于A(a,0),交y轴于B(0,b),且a,b满足(a-5)2+
=0.
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961633091411968/2977737567428608/STEM/aa4fb5f2-176e-45df-8aba-6b030ae7e5d1.png?resizew=180)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961633091411968/2977737567428608/STEM/dfc9a539-12c2-451b-a7b2-50c0b22aa490.png?resizew=181)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961633091411968/2977737567428608/STEM/aa39f51d-8917-4774-bb69-889be692b236.png?resizew=201)
(1)如图①,若点C坐标为(-2,0),且AH⊥BC于H,AH交OB于P,求点P坐标;
(2)如图②,连接OH,求证:∠AHO=45°;
(3)如图③,若点D为AB的中点,点M为y轴负半轴上一动点,连接MD,过D作DN⊥OM交x轴于N,点M在y轴负半轴上运动过程中,式子
的值是否发生改变,如发生改变,求出该式子的值的变化范围,若不改变,求该式子的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a4a403fd555ccac6fee03fbae1286c.png)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961633091411968/2977737567428608/STEM/aa4fb5f2-176e-45df-8aba-6b030ae7e5d1.png?resizew=180)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961633091411968/2977737567428608/STEM/dfc9a539-12c2-451b-a7b2-50c0b22aa490.png?resizew=181)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961633091411968/2977737567428608/STEM/aa39f51d-8917-4774-bb69-889be692b236.png?resizew=201)
(1)如图①,若点C坐标为(-2,0),且AH⊥BC于H,AH交OB于P,求点P坐标;
(2)如图②,连接OH,求证:∠AHO=45°;
(3)如图③,若点D为AB的中点,点M为y轴负半轴上一动点,连接MD,过D作DN⊥OM交x轴于N,点M在y轴负半轴上运动过程中,式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb2ed2d728b88b050c8b0a89ddcfaac.png)
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【推荐2】已知如图,直线y=﹣
x+4
与x轴相交于点A,与直线y=
x相交于点P.
(1)求点P的坐标;
(2)动点E从原点O出发,沿着O→P→A的路线向点A匀速运动(E不与点O、A重合),过点E分别作EF⊥x轴于F,EB⊥y轴于B.设运动t秒时, F的坐标为(a,0),矩形EBOF与△OPA重叠部分的面积为S.直接写出: S与a之间的函数关系式
(3)若点M在直线OP上,在平面内是否存在一点Q,使以A,P,M,Q为顶点的四边形为矩形且满足矩形两边AP:PM之比为1:
若存在直接写出Q点坐标.若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
(1)求点P的坐标;
(2)动点E从原点O出发,沿着O→P→A的路线向点A匀速运动(E不与点O、A重合),过点E分别作EF⊥x轴于F,EB⊥y轴于B.设运动t秒时, F的坐标为(a,0),矩形EBOF与△OPA重叠部分的面积为S.直接写出: S与a之间的函数关系式
(3)若点M在直线OP上,在平面内是否存在一点Q,使以A,P,M,Q为顶点的四边形为矩形且满足矩形两边AP:PM之比为1:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243198744059904/2243343787220992/STEM/96cd0d8e13df41bd9d15d6978033152b.png?resizew=269)
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解答题-作图题
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【推荐3】【阅读理解】
在平面直角坐标系
中,已知点R,S为平面内不重合的两点.给出如下定义:将点R绕点S顺时针旋转90度得到点
,点
关于y轴的对称点为
,则称点
为点R关于点S的“旋对点”.
【迁移应用】
如图,在平面直角坐标系
中,直线
与x轴相交于点A,与y轴相交于点B.平面内有一点
.
,并直接写出点M的坐标;
(2)点Q为直线
上一动点.
①若点Q关于点M的“旋对点”为点
,试探究直线
经过某一定点,并求出该定点的坐标;
②在①的条件下,设直线
所经过的定点为H,取
的中点N,连接
,求
的最小值.
在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bbd217b46c20ecf533c0641ebb7ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bbd217b46c20ecf533c0641ebb7ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb90ac26ba79c30d106b860546a0816a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb90ac26ba79c30d106b860546a0816a.png)
【迁移应用】
如图,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb9eb57ca36db386ffafeda213599c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387b4c1f581a35213cfb39593106865f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c403d609b223e9fc520e9351b1734cc.png)
(2)点Q为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb9eb57ca36db386ffafeda213599c.png)
①若点Q关于点M的“旋对点”为点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ec2e7e05431a2f7786f5c291b59e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c245d07852b191977b8845ef20bd6c.png)
②在①的条件下,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c245d07852b191977b8845ef20bd6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d2abf13c2842f58654abf73c6b4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c345b0c64ba53afb59d95bc148083a.png)
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困难
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【推荐1】平面直角坐标系在代数和几何之间架起了一座桥梁,实现了几何方法与代数方法的结合,使数与形统一了起来,在平面直角坐标系中,已知点A(x1,y1)、B(x2,y2),则A、B两点之间的距离可以表示为AB=
,例如A(2,1)、B(﹣1,2),则A、B两点之间的距离AB=
=
;反之,代数式
也可以看作平面直角坐标系中的点C(5,1)与点D(1,﹣2)之间的距离.
(1)已知点M(﹣7,6),N(1,0),则M、N两点间的距离为 ;
(2)求代数式
的最小值;
(3)求代数式|
| 取最大值时,x的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb1121d4ae42fb87bbb32f7abe00ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2afa2fc1e722fd1685b2cb101521295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8904e90e9f79420ee399c8f03946d0a2.png)
(1)已知点M(﹣7,6),N(1,0),则M、N两点间的距离为 ;
(2)求代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04e0bd33047f31468263e464eea3f07.png)
(3)求代数式|
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393e1b6f1b4517db6f8ceca9715d17e1.png)
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名校
【推荐2】在平面内,
为线段
外的一点,若以点
,
,
为顶点的三角形为直角三角形,则称
为线段
的直角点.特别地,当该三角形为等腰直角三角形时,称
为线段
的等腰直角点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/fc22eb35-c757-4389-b647-47592068aa8b.png?resizew=175)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/f9d31997-21f7-433d-a858-caff5704d74b.png?resizew=256)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/f28d15df-168e-408e-8b02-31101049e6ca.png?resizew=184)
(1)如图1,在平面直角坐标系
中,点
的坐标为
,点
的坐标为
,在点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
,
中,线段
的直角点是________;
(2)在平面直角坐标系
中,点
,
的坐标分别为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1a65d88f9823d49da8f3b96ea9ec6f.png)
①若
,如图2所示,若
是线段
的直角点,且点
在直线
上,求点
的坐标;
②如图3,点
的坐标为
,
的半径为1,若
上存在线段
的等腰直角点,求出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/fc22eb35-c757-4389-b647-47592068aa8b.png?resizew=175)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/f9d31997-21f7-433d-a858-caff5704d74b.png?resizew=256)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/f28d15df-168e-408e-8b02-31101049e6ca.png?resizew=184)
(1)如图1,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e9e62984b16a9c13d0e46e24bf3e8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/2fffad27b195220d9b31db743cd44eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1a65d88f9823d49da8f3b96ea9ec6f.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15a13b4190ac3d5feaee27a4c97b21b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a037686255e42bc0e93db4b66baa3115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d368f3b0aa811473a7b47f725d911b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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