F
1) Let's at first locate the points from ΔABC and ΔA'B'C' its image:
A( 2,6) B( 1,2) C( 4,2)
A'( 2,-1) B' ( 1,-5) C' ( 4,-5)
2) Analyzing those points we can see that there was a Translation down 7 units. Since the x-coordinate of both triangles remain the same.
3) So the answer is
Pre-Image Image
(x, y) -------------> (x, y -7)