Question

six graphs are shown below. click on the tabs to see them.
graph 1 graph 2 graph 3 grap
check the box corresponding to each graph that represents a funct

Explanation:

To determine if a graph represents a function, use the vertical line test: any vertical line drawn on the graph should intersect the curve at no more than one point. For this graph, a vertical line (e.g., $x=-4$) intersects the curve at two points, so it fails the test.

Answer:

This graph does NOT represent a function.