To determine if a graph represents a function using the vertical line test, you would draw or visualize vertical lines across the graph. If any vertical line intersects the graph at more than one point, then the graph does not represent a function.
Since I can't see the graph, I can't give a definitive answer. However, you can apply the vertical line test yourself by imagining or drawing vertical lines across the graph. If any vertical line intersects the graph at more than one point, the answer is "No." If every vertical line intersects at most one point, the answer is "Yes."