Question

Which set of ordered pairs represents a function?

{(2, –2), (1, 5), (–2, 2), (1, –3), (8, –1)}
{(3, –1), (7, 1), (–6, –1), (9, 1), (2, –1)}
{(6, 8), (5, 2), (–2, –5), (1, –3), (–2, 9)}
{(–3, 1), (6, 3), (–3, 2), (–3, –3), (1, –1)}

Answer 1

Do u have a url or pic or the graph?

Answer 2

if a set of ordered pairs is a function, then every input gives a unique output

so basically, look for the choice that doesn't have any x-values assigned to multiple y-values

for example, your first choice {(2, –2), (1, 5), (–2, 2), (1, –3), (8, –1)} isn't a function because x = 1 is assigned to both 5 and -3

can you try looking at the rest of the choices?