Question

Question was provided via image upload.

Explanation:

Step1: Recall the vertical line test

A graph represents a function if every vertical line intersects the graph at most once.

Step2: Apply the vertical line test to the given graph

For the provided U - shaped graph (a parabola - like graph), if we draw any vertical line (parallel to the y - axis) on the coordinate plane, it will intersect the graph at most one time. This satisfies the condition for a graph to be a function.

Answer:

Function