First locate the coordinates of Q UA D and then multiply by 4/3 to get Q' U' A' D'
QUAD are all points on the 4th quadratants
Q'(-9, 0) ⇒ (-9x4/3 , 0x4/3) = (-12, 0)
U'(-3, -3) ⇒ (-3x4/3 , -3x4/3) = (-4, -4)
A'(0, -6) ⇒ (0 x 4/3 , -6 x 4/3) =( 0, -8)
D' (-6, -12) ⇒ ( -6 x4/3 , -12 x4/3) =(-8, -16)