Question

look at this graph: is this relation a function? yes no

Explanation:

Step1: Recall function definition

A relation is a function if every input (x-value) has exactly one output (y-value). We use the vertical line test: any vertical line drawn on the graph intersects the relation at most once.

Step2: Check each x-value

List the x-values of the points: -5, -3, -2, 6. Each x-value corresponds to only one y-value. No vertical line will intersect more than one point.

Answer:

yes