Question

Pls help due in 1 hour!!!!!!

Answer 1

Explanation:

{(3, 7), (3, 6), (5, 4), (4, 7)} Is not a function

{(1, 5), (3, 5), (4, 6), (6, 4)} is a function

{(2, 3), (4, 2), (4, 6), (5, 8)} is not a function

{(0, 4), (3, 2), (4, 2), (6, 5)} is a function