Answer :

Answer:  (3, 3), (3, 9), (-6, 9), (-6, 3)

Step-by-step explanation:

With a dilation of 3 centered about the origin-

the point (1, 1) would go to (3, 3)

the point (1, 3) would go to (3, 9)

the point (-2, 3) would go to (-6, 9)

the point (-2, 1) would go to (-6, 3)

simply multiply the original coordinates all by 3.