Question

Which set of ordered pairs does not represent a function?

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

Answer 1

The fourth option does not represent a function since it has two of the same x value.

Below is the fourth option graphed (the fact that two points are in the same x shows this set of ordered pairs is not a function):