Question

Determine which relation is a function.

A.
{(–5, 1), (–5, 0), (–2, 1), (–1, 4), (6, 2)}

B.
{(–5, 1), (–2, 0), (–2, 2), (3, 4), (6, 2)}

C.
{(–5, 1), (–2, 0), (–1, 1), (2, 4), (6, 3)}

D.
{(–5, 3), (–2, 0), (–1, 2), (6, 4), (6, 3)}
@Directrix

Answer 1

a function is a set of numbers where there is only one input for each output meaning that only the y values can be repeated but not the x values

Answer 2

A given x can go to exactly one y for that x. There can be no two timing xs.

{(–5, 1), (–5, 0), (–2, 1), (–1, 4), (6, 2)}

-5 goes with1 and with 0 so A) is not a function.