如图,在平面直角坐标系中,一次函数y=x的图象为直线l.
(1)观察与探究
已知点A与A′,点B与B′分别关于直线l对称,其位置和坐标如图所示.请在图中标出C(4,﹣1)关于线l的对称点C′的位置,并写出C′的坐标_____;
(2)归纳与发现
观察以上三组对称点的坐标,你会发现:
平面直角坐标系中点P(a,b)关于直线l的对称点P′的坐标为_____;
(3)运用与拓展
已知两点M(﹣3,3)、N(﹣4,﹣1),试在直线l上作出点Q,使点Q到M、N两点的距离之和最小,并求出相应的最小值.
(1)观察与探究
已知点A与A′,点B与B′分别关于直线l对称,其位置和坐标如图所示.请在图中标出C(4,﹣1)关于线l的对称点C′的位置,并写出C′的坐标_____;
(2)归纳与发现
观察以上三组对称点的坐标,你会发现:
平面直角坐标系中点P(a,b)关于直线l的对称点P′的坐标为_____;
(3)运用与拓展
已知两点M(﹣3,3)、N(﹣4,﹣1),试在直线l上作出点Q,使点Q到M、N两点的距离之和最小,并求出相应的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/1ed743ac-e83f-4a9a-9f6e-719abc26791b.png?resizew=226)
17-18八年级·江苏徐州·期末 查看更多[5]
2017-2018学年江苏省徐州市八年级(上)期末数学试卷人教版八年级上册《第13章 轴对称》单元测试江苏省扬州市梅岭中学2021-2022学年八年级上学期12月月考数学试题(已下线)专题4.8 正比例函数的图象和性质(分层练习)(基础练)-2023-2024学年八年级数学上册基础知识专项突破讲与练(北师大版)(已下线)专题6.8 正比例函数的图象和性质(分层练习)(基础练)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)
更新时间:2018-04-14 13:35:54
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