plis tolong bantuin yah yg no 4 ama 5, makasih

4) R' = (1,9)
     R = (x,y)

     x + 2 = 1                 y + 3 = 9
           x = -1                      y = 6           

      koordinat titik R = (-1,6)

5) M = (-5,-4)
    M' = (-4,-6)
    translasi (a,b)
   
    -5 + a = -4             -4 + b = -6
           a = 1                      b = -2

     N = (2,-7)
     translasi (1,-2)
     N' = (2 + 1,-7 - 2)
     koordinat N' = (3,-9)