Question

Can someone please help me?

Which of the sets of ordered pairs represents a function?

A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}

Answer 1

The answer is A because each x-value should only have one y-value in a working function. I hope this helps!