Question

HELP PLEASE ILL MEDAL
Which of the sets of ordered pairs represents a function?

A = {(3, –5), (4, 6), (–3, 9), (2, 7)}

B= {(2, 4), (–1, –7), (5, 6), (4, 3)}

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

Answer 1

Both A and B are functions. All of our x values are unique, the set of ordered pairs is a function.