Answer: (x, y) ---------------- (-x, y)
According to the figure given,
The original image has the following coordinates with corresponding coordinates
A = (3, 3) ----------------------- A' = ( -3, 3)
B = (1, 3) ------------------------ B' = ( -1, 3)
C = (1, 1) -------------------------C = ( -1, 1)
D = (5, 1) ------------------------- D = (-5, 1)
This implies that the transformation occurs by assigning a negative sign to the x - axis
Hence, (x , y ) -------------------- (-x, y)