Answer: R (3,6) S (5,9) T (6,8)
Explanation:
1. Translation: add two to each x and y
R (6,3), S (9,5), T (8,6)
2. Reflection: the y=x basically just creates a line running through (0,0) and you're flipping the translated coordinates over that line
R (3,6) S (5,9) T (6,8)