Final answer:
The letters that will pass the vertical line test are w and z.
Step-by-step explanation:
The letters that will pass the vertical line test are w and z.
The vertical line test is used to determine whether a graph represents a function or not. If a vertical line passes through the graph at more than one point, then the graph does not represent a function.
In this case, both the letters w and z have vertical lines that pass through them at only one point, so they will pass the vertical line test.