Question

Determine which relation is a function.

{(–4, 3), (–2, 3), (–1, 2), (2, 5), (3, 2)}
{(–4, 1), (–2, 3), (–2, 1), (–1, 5), (3, 2)}
{(–4, 1), (–2, 3), (–1, 2), (3, 5), (3, 2)}
{(–4, 1), (–2, 3), (–1, 1), (–1, 5), (3, 2)}

Evaluate the function at x = –2.

y = –4
y = 0
y = 2
y = 3

Evaluate the function at the given point.

x = 0

x –32 –22 –6 0 6 26 32
y –2 –15 0 3 0 18 54


y = –6
y = 0
y = 6
y = 3