Question

Which set of ordered pairs represents a function?

{(7,-3), (9,-9), (7,9), (5, 1)}
o {(2,8),(-1, -7), (-2,-3), (-8,–7)}
{(-2,7), (6,6), (9,-6), (6, -7)}
{(5,7),(-9,-4), (0, -5), (0, -2)}

Answer 1

(2,8), (-1,-7), (-2,-3), (-8,-7)

Explanation:

It's this one because each input (x axis) has one and only one output (y axis) The others the input has more than one output making them wrong. Hope this helps