For problems 1 to 4 find: a) domain, b) range and c) determine if it is a function and explain your reasoning. 1) {(3, 2), (5,7),(1,4), (9,2), (3, 7) }

2) {(6,2), (3,5), (9,0), (5,7), (8, 1)}

3) {(1,9), (2,7), (5,4), (7, 12), (3,9)}

4 {(0, 2), (3, 3), (8, 7), (2, 2), (3,9)}​