When graphing rational functions, Vertical asymptotes and holes have a different function. A vertical function serves as a boundary line and is a guide for you to put your graphs in the specified spot. Holes are different, instead of being a boundary line, they are plotted as points on the graph to make your graphs a little more accurate. When dealing with a rational function that has a vertical asymptote you need to remember that you factor the function out as much as possible and then you are able to solve for your boundary lines. Another way of differentiating between the two is that the holes are a plotted point where the vertical asymptote is not.
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