If y = 6x – 4, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(0, –4), (1, 2), (3, 14)}
{(5, 20), (2, 10), (–1, –3)}
{(–3, –15), (6, 25), (3, 5)}
{(4, 18), (0, 10), (0, –2)}