Hey there!
The answer is A) A(9, 12), B(-12, -15), C(-12, 9)
To dilate using scale factor with given coordinates, we simply multiply the coordinates by the scale factor. Therefore, we multiply each of the coordinates by 3.
A(3, 4) * 3 = A(9, 12)
B(-4, -5) * 3 = B(-12, -15)
C(-4, 3) * 3 = C(-12, 9)
Hope this helps and have a super awesome day! :)
P.S. Let me know if you need any more help! Just comment below :)