19. AWXY had points at W(7,1),
X(-2,6), and Y(3,0). It was dilated to
form AW'X'Y' with points at W'(21,3),
X'(-6,18), and Y'(9,0). What scale
factor was used to form AW'X'Y'?
a. k =3
b. k = 5
C. k = 9
d. k = 3
