Question

Which of the sets of ordered pairs represents a function?

A = {(−4, 5), (1, −1), (2, −2), (2, 3)}

B = {(2, 2), (3, −2), (9, 3), (9, −3)}

Only A
Only B
Both A and B
Neither A nor B

Answer 1

For a function. There shouldn't be two or more values of y coordinates for a single x coordinate. Which set is breaking this rule

Answer 2

so neither

Answer 3

or only A

Answer 4

@FaiqRaees