First, we need to identify the coordinates of A, B, A', and B'.
So, the coordinates are:
A = (-4, 3)
A' = (-4, -4)
B = (2, 1)
B' = (2, -2)
Then, the transformation is :
(x, y) --> (x, - y - 1)
Because:
A' --> (-4, 3) --> (-4, - 3 -1) = (-4, -4)
B' --> (2, 1) ---> (2 , - 1 - 1 ) = (-2, -2)
Answer: (x,y) --> (x, -y-1)