As we see, the graph of f(x) "snuggles" against the vertical line x=2 as x approaches 2 from the right.
The graph never crosses or touches the line as the function has no value at x=2. If a graph of a function
gets closer and closer to a straight line we say that the line is its * asymptote*.
The line x=2 is a vertical asymptote of f(x)=1/(x-2).