在平面直角坐标系中,点A、B分别在x轴和y轴的正半轴上,OA=OB,AB=6
.
![](https://img.xkw.com/dksih/QBM/2020/10/21/2575711988137984/2576654178983936/STEM/a781aadc932b416db6130b9ec215717a.png?resizew=151)
(1)求AB所在直线的函数表达式;
(2)如图,以OA,OB为边在第一象限作正方形OACB,点M(x,0)是x轴上的动点,连接BM.
①当点M在边OA上时,作点O关于BM的对称点O′,若点O′ 恰好落在AB上,求△OBM的面积;
②将射线MB绕点M顺时针旋转45°得到射线MN,射线MN与正方形OACB边的交点为N.若在点M的运动过程中,存在x的值,使得△MBN为等腰三角形,请直接写出x所有可能的结果.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2020/10/21/2575711988137984/2576654178983936/STEM/a781aadc932b416db6130b9ec215717a.png?resizew=151)
(1)求AB所在直线的函数表达式;
(2)如图,以OA,OB为边在第一象限作正方形OACB,点M(x,0)是x轴上的动点,连接BM.
①当点M在边OA上时,作点O关于BM的对称点O′,若点O′ 恰好落在AB上,求△OBM的面积;
②将射线MB绕点M顺时针旋转45°得到射线MN,射线MN与正方形OACB边的交点为N.若在点M的运动过程中,存在x的值,使得△MBN为等腰三角形,请直接写出x所有可能的结果.
19-20八年级上·浙江丽水·期末 查看更多[2]
更新时间:2020-10-22 19:59:15
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相似题推荐
解答题-问答题
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【推荐1】如图,直线
与x轴交于点A,与y轴交于点B,点C是OB的中点.
(2)在x轴上找一点D,使得
,求点D的坐标;
(3)在x轴上是否存在一点P,使得
是直角三角形?若存在,请写出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b5062be5cf27ae8089ad0c25d1b7c3.png)
(2)在x轴上找一点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bf9eca8fcfdc14b36e9031d2895ef9.png)
(3)在x轴上是否存在一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
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【推荐2】如图,在平面直角坐标系xOy中,已知点
、
,且
,
若PQ是某个矩形的一条对角线,且该矩形的边均与某条坐标轴垂直,则称该矩形为点P、Q的对角矩形
下图
是点P、Q的对角矩形的示意图
已知点
点
.
![](https://img.xkw.com/dksih/QBM/2018/7/20/1992508006981632/1993365422768128/STEM/3bf2a0d7dd4a410fb277a836689a0d97.png?resizew=216)
(1)当
时,在图
中画出点A、B的对角矩形;
(2)若点A、B的对角矩形面积是15,求m的值;
(3)设一次函数
的图像经过点A,交y轴于点C,若在线段AC上存在一点D,使得点D、B的对角矩形是正方形,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9fcbc60ae6257d13f1678aef9e46f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8b3e05c886a3d71eb09c7639001414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27abe5338a7c9e5702decef124de5478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a359e3a8a48eb84e0fba6077037915b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8850ca88266a65c7d289ebfbea3fe30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc49433db2e1693a4269ef2f4d8374c.png)
![](https://img.xkw.com/dksih/QBM/2018/7/20/1992508006981632/1993365422768128/STEM/4f27cdd67f5f4f8ba3839f0fc8a5115e.png?resizew=216)
![](https://img.xkw.com/dksih/QBM/2018/7/20/1992508006981632/1993365422768128/STEM/3bf2a0d7dd4a410fb277a836689a0d97.png?resizew=216)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c524af32be49dfc3b1e60ea6114bc78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
(2)若点A、B的对角矩形面积是15,求m的值;
(3)设一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381c8bf389f0d017906fa5c139ec9d84.png)
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【推荐1】如图,C是线段
上的一点,以
为斜边在线段
同侧作等腰直角三角形
和
,过D作
于点D,且
,连接
交
于点G,连接
.
![](https://img.xkw.com/dksih/QBM/2022/1/22/2900084971192320/2901498650910720/STEM/771b2cc4-db3a-4748-aaa8-5a63609bf604.png?resizew=263)
(1)求证:
;
(2)请判断
的形状,并说明理由;
(3)请写出
与
的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175c239742c7ba8fd67a6d5f99cb1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcc5f2231720ef682d5812fbafd832f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0593c8af9d5f59be79b244efa6f82c06.png)
![](https://img.xkw.com/dksih/QBM/2022/1/22/2900084971192320/2901498650910720/STEM/771b2cc4-db3a-4748-aaa8-5a63609bf604.png?resizew=263)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1dc97a08d5e02e24995606f5505314.png)
(2)请判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
(3)请写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781026dac62b5373596f56360bf573a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b0b11a80e8b107e55534d7fda9f2b.png)
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【推荐2】如图,在平行四边形
中,连接
,
是
的中点,过点
作
,分别交
,
于点
,
.
.
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/f40b3bf6b27f936e0747de92151a1f77.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93380ab8eccc6e6f11bdf19ffc2d4cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d35d8d8bb0dc17f2f86fe5b230a2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70abed7faf55deb24162255c5ad59577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐1】正方形
中,点H为射线
上的一个动点,连接
,把
沿
翻折,得到
,直线
交射线
于点M,连接
,过G作
,分别交
于E,N,F.
上时,填空:
的度数为_______;
与
的数量关系为________;
(2)如图2,当点H在线段
的延长线上时,(1)中的结论是否仍成立?若成立,请结合图2情形写出证明过程;若不成立,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6629fbe2eef7def1afa88acbbabdb10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fdb52a343a23b5ce54fefd5eebd4d55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d354155f71a1736c1c9186168695edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cb3f1f8eac0fe9b463006cb5cf01f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46e41f6d3cd303d18a211b0418f0c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a459f78e4a3516d8a8535290ede7f386.png)
(2)如图2,当点H在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐2】综合与实践
利用正方形纸片的折叠开展数学活动,探究体会在正方形折叠过程中,图形与线段的变化及其蕴含的数学思想方法.
如图①,E 为正方形
的
边上的一个动点,
,将正方形
对折,使点
与 点
重合,点
与 点
重合,折痕为
.
(1)将正方形
展平后沿过点
的直线
折叠,使点
的对应点
落在
上,折痕为
, 连接
, 如图②,请根据以上条件填空.
①点
在以点
为圆心, 的长为半径的圆上(填线段);
②
的长为 ;
拓展延伸
(2)当
时,正方形
沿过点
的直线
(不过点
)折叠后,点
的对应点
落在正方形
的内部或边上.
① 求
面积的最大值;
② 连 接
,
为
的中点,点
在
上,连接
求
的最小值.
利用正方形纸片的折叠开展数学活动,探究体会在正方形折叠过程中,图形与线段的变化及其蕴含的数学思想方法.
如图①,E 为正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
(1)将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9171484a68c84cad91e4f2233392f600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da650ee630c36fd5ce9abb4fb826df7b.png)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f00d88b9f850dea09aa8c682b9d610.png)
拓展延伸
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97878915ceefd7aeccb156bc318b5da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
① 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19343455668abab3ca3b05aa2cf616c2.png)
② 连 接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5c762edb7f688b96c33eb3ada9c3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eaadeeb52e7729fe8d6bdd736eaa783.png)
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【推荐3】综合与实践课上,老师让同学们以“正方形的折叠”为主题开展数学活动.
(1)操作
操作一:对折正方形纸片
,使
与
重合,得到折痕
,把纸片展平;
操作二:在
上选一点P,沿
折叠,使点A落在正方形内部点M处,把纸片展平,连接
,
,延长
交
于点Q,连接
(如图1).
(2)探究
① 特例研究
按(1)中操作,当点M在
上时(如图2),
_____
,
_____
;
② 一般推演
改变点P在
上的位置(点P不与点A,D重合)进行(1)中操作.随着点P的位置改变,
的度数是否发生变化,若不变,请按图3所示求出
的度数,若变化,说明理由;
(3)应用
在(2)的探究中,已知正方形纸片
的边长为6
,当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5c276923c1a46eaf18193604fdb6b0.png)
时,直接写出
的长;
(4)拓展
在(2)的探究中,连接
分别交
于点G、H(如图4),请直接写出线段
、
、
之间一个等量关系式.
(1)操作
操作一:对折正方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/49b50357a6545cae8348e3059312f520.png)
操作二:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
(2)探究
① 特例研究
按(1)中操作,当点M在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25efef47c08d758c2a1778220eb5723f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b782f7763233865373b80b266223817f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
② 一般推演
改变点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4ad42d9820253b26da9fcf168e61fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4ad42d9820253b26da9fcf168e61fa.png)
(3)应用
在(2)的探究中,已知正方形纸片
![](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/bc5c276923c1a46eaf18193604fdb6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(4)拓展
在(2)的探究中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1aaf5c27cab84ebf216ac14252083e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/009665e9-928f-429e-af41-64e5b6f1648b.png?resizew=458)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐1】在如图所示的方格纸中建立适当的直角坐标系,使得
的点
的坐标为(-2,4),点
的坐标为(-4,0).
(1)请在方格纸中画出
轴,
轴,并标出原点
;
(2)画出
关于
轴对称的
;
(3)在
轴上找一点
,使
最小,则点
的坐标是______;
(4)直接写出点
到
的距离是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/0a1d3faf-8b41-4c67-806c-861e41581331.png?resizew=152)
(1)请在方格纸中画出
![](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/1dde8112e8eb968fd042418dd632759e.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(4)直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,点C的坐标为(﹣1,5).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/61b7facd-c25b-4d1e-9f2e-5d0ef48f517a.png?resizew=321)
(1)若把△ABC向右平移5个单位,再向下平移3个单位得到
,并写出
的坐标;
(2)在x轴上找一点P,使得PA+PB的值最小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/61b7facd-c25b-4d1e-9f2e-5d0ef48f517a.png?resizew=321)
(1)若把△ABC向右平移5个单位,再向下平移3个单位得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)在x轴上找一点P,使得PA+PB的值最小.
您最近一年使用:0次