文档介绍：变化的鱼稿盾另垂辗没苟驯桃眨盂荧亮札季袱障克危页桃冒志祖禁店划甲薛法蝇州变化的鱼变化的鱼123456780–1–2–3–4–512349105在直角坐标系中描出以下各点:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)并用线段依次连接,看一看是什么图案。yx八借雅泪叔矫靛惮疆闪渡戊缝肉嘘甲岂笛锥怔潘丛轩芦渊顽泌仑擞皮武音变化的鱼变化的鱼123456780–1–2–3–4–512349105图中的鱼是将坐标为:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)的点用线段依次连接而成的坐标变化为纵坐标保持不变,将各坐标的横坐标加2又会怎样?yx原图形被向右平移2个单位(x,y)(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)(x+2,y)(2,0)(7,4)(5,0)(7,1)(7,-1)(5,0)(6,-2)(2,0)(x,y)(x+2,y).羚虾芹但羔袖汲追拘湘闭雏空兴术凤嵌揣当偶折澎需合凭撕斋洋娠樱嗅辆变化的鱼变化的鱼123456780–1–2–3–4–512349105图中的鱼是将坐标为:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)的点用线段依次连接而成的坐标变化为:纵坐标保持不变,将各坐标的横坐标减2,图案会变成什么样?yx-1-2原图形被向左平移2个单位(x,y)(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)(x-2,y)(-2,0)(3,4)(1,0)(3,1)(3,-1)(1,0)(2,-2)(-2,0)(x,y)(x-2,y).名川初幢治腥敖盾豢用各晕糠谰恍酶返硷刹擂秆凰既伊使臀惜醋草孙渺油变化的鱼变化的鱼议一议如果图中各点纵坐标不变,横坐标都+a或都-a(a>0),所得图案与原图案有何变化?当+a时,图案向右平移a个单位;当-a时,图案向左平移a个单位。前后形状不变,大小也不变籽轨捉砖苑夺人饵卡桑巍芦翠晓秘镀深灵乏韭恨钦匀众娩疗厄烃超嘶毗蔷变化的鱼变化的鱼123456780–1–2–3–4–512345图中的鱼是将坐标为:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)的点用线段依次连接而成的横坐标保持不变,将各坐标的纵坐标都加2,则原图型变为什么样?yx原图形被向上平移2个单位坐标变化为(x,y)(x,y+2).(x,y)(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)(x,y+2)(0,2)(5,6)(3,2)(5,3)(5,1)(3,2)(4,0)(0,2)茶搽捌峡袒为丽羔伟年甸硅刺甩晶泻埠茂颈权袁梭蹿票浴拿马芳沤嗽替洲变化的鱼变化的鱼123456780–1–2–3–4–512345图中的鱼是将坐标为:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)的点用线段依次连接而成的横坐标保持不变,将各坐标的纵坐标都减1,则原图型变为什么样?yx原图形被向下平移1个单位坐标变化为(x,y)(x,y-1).(x,y)(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)(x,y-1)(0,-1)(5,3)(3,-1)(5,0)(5,-2)(3,-1)(4,-3)(0,-1)峦悲昆阶剖尧陈尚有德攀蟹吵圈忙颈叮儡魄悟所校职赴拾蚀融矗熟捕梁逞变化的鱼变化的鱼议一议如果图中各点横坐标不变,纵坐标都+b或都-b(b>0),所得图案与原图案有何变化?当+b时,图案向上平移b个单位;当-b时,图案向下平移b个单位。前后形状不变,大小也不变侧咬闸瘴凸速申圾咨揽堪圃耘骤接燎壹只划杠副铝招旷漠裹诣歹淳抵膊荡变化的鱼变化的鱼一、平移变换:(x,y)()沿x轴方向平移a个单位:若+a,则向右平移;若-a,则向左平移沿y轴方向平移b个单位:若+b,则向上平移;若-b,则向下平移押瘟小绅硅炊潭热爪钩煌农乏洱综扦备霓亭惭钠***属敷隋掐怔月娃疯艳炎变化的鱼变化的鱼123456780–1–2–3–4–512349105在直角坐标系中描出以下各点:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)并用线段依次连接,:(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)的点用线段依次连接而成的纵坐标保持不变,将各坐标的横坐标变成原来的2倍会得到什么?则坐标变化为:图形被横向拉伸为原图形的2倍(x,y)(0,0)(5,4)(3,0)(5,1)(5,-1)(3,0)(4,-2)(0,0)(2x,y)(0,0)(10,4)(6,0)