Question

what is the range? is the graph a function?
{ -4, -3, 1, 2 } no
{ -6, 0, 2, 3, 5 } no
{ -6, 0, 2, 3, 5 } yes
{ -4, -3, 1, 2 } yes

Explanation:

Step1: Identify all y-values (range)

List y-coordinates of points: $-4, -3, 1, 2$

Step2: Test if graph is a function

Use vertical line test: no vertical line intersects more than one point, so it is a function.

Answer:

$\{-4, -3, 1, 2\}$ Yes