Question

I NEED HELP‼️

Select all relations that are functions.
{(3,2), (5,8), (2,-2)}
{(4,-2),(4,-3),(4,6)}
{(-1,2),(-2,2),(-3,2),(-4,2)}
{(-7,5).(6,-3).(5,8)}

Answer 1

All but the second one

Explanation:

The rule of a function is that you can't have the same x values in an expression. You can have multiple y values but not multiple x values.