Answer 1

(i) We have:
5 - 2 = 3

6 - 2 = 4

7 - 2=5

∴ R = \[{(x, y) : y = x - 2, x \in P, y \in Q}\]

(ii) R = {(5, 3), (6, 4), (7, 5)}

(iii) Domain (R) = {5, 6, 7}
Range (R) = {3, 4, 5}