Question

Which of the following sets of ordered pairs is not a function?

{(0, 2), (1, 4), (2, 5), (3, 6)}
{(-1, 2), (1, 3), (1, 5), (-3, 4)}
{(0, 2), (1, 2), (2, 2), (3, 2)}
{(-4,3), (-1, 1), (-2,5), (3, 7)}

Answer 1

The second set

Explanation:

The second set is not a function because there is an input with more than one output.