Answer:
(ex1)
Domain: 1 ≤ x ≤ 5
Range: 11 ≤ y ≤ 13
(a)
Domain: 2 ≤ x ≤ 6
Range: 0 ≤ y ≤ 4
(b)
Domain: -3 ≤ x ≤ 4
Range: -2 ≤ y ≤ 6
Explanation:
The domain is the set of values that x can take, and the range is the set of values that y can take. So to determine each one, read the maximum and minimum values possible for each.