If you translate (0, - 2) up three unit lengths and down one unit length, the coordinates of the position you reach are——

If you translate (0, - 2) up three unit lengths and down one unit length, the coordinates of the position you reach are——


(0,0)
Because (0, - 2 + 3-1) = (0,0)



After the point P1 (m, n) is translated to the right by 3 unit lengths, and then to the down by 2 unit lengths to a position P2, the coordinates are (a, b), then the relationship between M, N, a, B is (a, b)___ .


m+3=a
n-2=b