Answer:
1. (3, 2) --> (-x, -y) = b, (-3, -2)
2. (3, 2) --> (-y, x) = a, (-2, 3)
3. (7, 9) --> (-x, y) = d, (-7, 9)
4. (7, 9) --> (x + 3, y - 8) = e, (10, 1)
5. (-7, 9) --> (y, -x) = c, (9, 7)
Hope this helps!