Answer:
See below.
Step-by-step explanation:
Firstly the counterclockwise rotation is (x, y) ---> (-y, x), so A(-6, 3) moves to (-3, -6).
Then the translation (-3, -6) ---> ( -3-3), -6) = (-6, -6) (3 units to the left).
Finally the second translation moves (-6, -6) to (-6, -6-2) = (-6, -8) = A' ( 2 units down).
The coordinates of B', C' and D' are calculated in exactly the same way.