Answer:
see explanation
Step-by-step explanation:
Under a reflection in the y- axis
a point (x, y ) → (- x, y ) , then
R (- 3, 3 ) → R' (3, 3 )
S (- 3, 8 ) → S' (3, 8 )
T (- 2, 7 ) → T' (2, 7 )
