Answer: Choice D
(0,0) and (0,9) and (9,0)
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Explanation:
The original three vertices are A = (0,0), B = (0,3) and C = (3,0). Each point is formed by reading the columns from top to bottom.
Multiply those coordinates by 3
A = (0,0) turns into A ' = (0,0) ... ie there's no change here
B = (0,3) turns into B ' = (0, 9)
C = (3,0) turns into C ' = (9, 0)
The three points A', B', and C' are three times further away from the origin compared to the original points A, B, C.
