please help - brainliest plus 20 points

The graph of a function is shown:

Which of the following correctly identifies the set of outputs?
{–3, –2, 3}
{–1, 2, 3}
{(–3, 2), (–2, 1), (3, 3), (3, –1)}
{(2, –3), (1, –2), (3, 3), (–1, 3)}