Question

Which of the sets of ordered pairs represents a function.

Answer 1

the answer is d. neither a nor b

Answer 2

So what makes a function a function is that each input (x) only has one output (y).

Set A is not a function because when x = 2, y = -2 and 3.

Set B is not a function because when x = 9, y = 3 and -3.

In short, the correct option is "Neither A nor B".