Question

1. Which relation is a function?
(Points : 4)
{(1, 2); (2, 3); (3, 4); (1, 5)}
{(1, 2); (1, 3); (1, 4); (1, 5)}
{(1, 2); (2, 3); (3, 4); (2, 5)}
{(1, 2); (2, 2); (3, 2); (4, 2)}

Answer 1

a function has to have 1 y value for 1 x value soooo wats ur answer

Answer 2

A?

I'm really bad at this so yea :/