Answer:
{(2,4), (-1, 7), (3,0), (5,4)}
{(-6, 1), (0, 1), (2, 1), (3, 1)}
{(-3, -3), (-1, 6), (4, 5), (5, 4)}
Step-by-step explanation:
For a relation to be a function, the same x-value can't have multiple y-values.
For this reason, this relation is not a function:
{(-4,0), (-4,8), (-1, 3), (2,9)}
And these are functions:
{(2,4), (-1, 7), (3,0), (5,4)}
{(-6, 1), (0, 1), (2, 1), (3, 1)}
{(-3, -3), (-1, 6), (4, 5), (5, 4)}
