Question

six graphs are shown below. click on the tabs to see them.
graph 1 graph 2 graph 3 graph 4
check the box corresponding to each graph that represents a function.

Explanation:

Step1: Recall function vertical line test

A graph represents a function if no vertical line intersects the graph more than once.

Step2: Apply test to given graph

For each x-value in this graph, there is exactly one corresponding y-value (no vertical line would pass through more than one point).

Answer:

This graph represents a function, so it should be checked.