Question

Which set of ordered pairs does not represent a function?

{(-8,-8), (9, 9),(4,5), (4,0)}
{(5,-5),(-7,3), (9,3), (3,-9)}
{(-5,0), (3,-6), (5,3), (-6,3)}
{(9,2), (0.8), (2, 2), (8.9)​

Answer 1

{(-8,-8), (9, 9),(4,5), (4,0)}

Explanation:

A relation that is a function does not have any repeating x-values.

A function has one input assigned to exactly one output.

The x-value of 4 repeats in the top set:

{(-8,-8), (9, 9),(4,5), (4,0)}

Therefore, the set is not a function.

Brainilest Appreciated.