Question

Which set of ordered pairs represents a function?

{(0, 1), (1,3), (1,5), (2, 6)}
{(0, 0), (1, 2), (2, 4), (3, 4);
{(0, 1), (1, 2), (2, 3), (2, 4);
{(0,0), (0, 2), (2, 2), (2, 4);

Answer 1

{(0, 0), (1, 2), (2, 4), (3, 4)

Explanation:

the x in the ordered pair is not suppose to repeat, clearly this doesn't