Question

9 multiple choice 1 point which of the following graphs represents a function? all of these are functions

Explanation:

Step1: Recall vertical - line test

A graph represents a function if any vertical line drawn on the graph intersects the graph at most once.

Step2: Analyze first graph

A vertical line can intersect the first graph at more than one point, so it is not a function.

Step3: Analyze second graph

For any vertical line drawn on the second graph, it will intersect the graph at most once, so it is a function.

Step4: Analyze third graph (circle)

A vertical line can intersect the circle at two points, so it is not a function.

Answer:

The second graph represents a function.