初中数学中“用坐标表示平移”这个知识点中,讲述了图形平移时,图形上各点坐标的变化具有如下规律:①在平面直角坐标系中,将点(x,y)向右(或向左)平移a个单位长度,可以得到对应点(x+a,y)(或(x-a,y));将点(x,y)向上(或向下)平移b个单位长度,可以得到对应点(x,y+b)(或(x,y-b)).②对一个图形平移,这个图形上所有点坐标都要发生相应变化;反过来,从图形上点 In the middle school mathematics, “coordinate translation” is the point where the change of the coordinates of each point on the graph has the following rules: ① In the rectangular coordinate system, point (x, y) (Or to the left) by a unit length to obtain the corresponding point (x + a, y) (or (xa, y)); to translate the point (x, y) upwards (or downwards) by b units of length, You can get the corresponding point (x, y + b) (or (x, yb)). ② For a graphics translation, the coordinates of all the points in the graphics should be changed accordingly;