Question

Correctly classify each relation.

{(2, 2),(4, 4),(6, 6),(8, 8)}
{(0, 3),(3, 5),(5, 6),(8, 4)}
{(1, 2),(3, 3),(4, 8),(6, 3)}
{(3, 4),(5, 2),(5, 6),(7, 3)}
which ones are functions

Answer 1

Line 2and 3 are the functions

Answer 2

the first one is a straight line