Given y = 2x – 1 and x ≤ 5
for x = 1, y = 2 × 1 – 1 = 1
x = 2, y = 2 × 2 – 1 = 3
x = 3, y = 2 × 3 – 1 = 5
x = 4, y = 2 × 4 – 1 = 7
x = 5, y = 2 × 5 – 1 = 9
Relation R = {(1, 1), (2, 3), (3, 5), (4, 7), (5, 9)}
∴ Domain = {1, 2, 3, 4, 5}
∴ Range = {1, 3, 5, 7, 9}