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)}

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

Respuesta :

A function will not have any repeating x values....it can have repeating y values, but all the x values have to be different for it to be a function.

A is a function because all the x values are a different number
B is not a function because u have repeating x values...u have repeating 4's and repeating 9's