Which set of ordered pairs shows y as a function of x?
O {(7,-2), (5, 4), (5. -2), (7, -1)}
O
{(-8, 5), (-8, 4), (-8, 3), (-8, 2)}
{(1, 0), (-2, 9), (9, -2), (9, 1)}
O {(5,2), (-6, 4), (2, 3), (6,4)}