Which set of ordered pairs is a function?
{(-5, 1), (–3, 2). (–1, 3), (1, 4), (3, 5)}

{(-1, 5), (-1, 4), (-1, 3), (-1, 2). (-1, 1)}

{(-2, 1), (-4, 2). (0, 3). (4, 1). (-2, 5)}

{(-6, -4), (-4, -2), (o, 0), (-4, 2). (-6, 4)}