Answer:
Shayla is not applying the vertical line test correctly.
Step-by-step explanation:
The vertical line test is useful to determine whether the provided curve is a graph of function or not.
Vertical line test: If we draw a vertical line anywhere on xy plane and the vertical line intersect the graph more than once, then the graph is not a function.
Consider the figure 1:
The vertical lines intersect the graph exactly at one spot. it doesn't matter where we drop the vertical line.
Now consider the figure 2:
Here, the graph has exactly one y-intercept, but it doesn't follow the vertical line test as the graph hits the vertical line in two spots.
Therefore, she is not applying the vertical line test correctly.