Question

Which set of ordered pairs represents y as a function of x?

{(5, 4), (2, 3), (1, 1), (2, 4)}
{(-9, 2), (0, 6), (1, -2), (0, 6)}
{(3, 2), (-4, -2), (3, 1), (-4, 1)}
{(-1, 0), (4, 3), (-7, -3), (-1, -8)}

Answer 1

{(-1, 0), (4, 3), (-7, -3), (-1, -8)}
this will be the answer

Answer 2

I would say the first row.
{(5,4), (2,3, ( 1,1), (2,4)}

because (1,1), the 'x' and 'y' are the same.