3-7 图片移位2

# [1,0,100],[0,1,200] 2*2 2*1
# [[1,0],[0,1]] 2*2 A
# [[100],[200]] 2*1 B
# xy C
# A*C+B = [[1*x+0*y],[0*x+1*y]]+[[100],[200]]
# = [[x+100],[y+200]] 沿着x轴右移了100个点，沿着y轴向下移动了200个点

#(10,20)->(110,120)