Answer:
R'(-15, 1.5)
S'(-6, 3)
T'(-6, -4.5)
U'(-15, -4.5)
Explanation:
Multiply every coordinate by the scale factor k = 3/2 which also 1.5.
R(-10, 1) ---> R'(-15, 1.5)
S(-4, 2) ---> S'(-6, 3)
T(-4, -3) ---> T'(-6, -4.5)
U(-10, -3) ---> U'(-15, -4.5)