## Precalculus (6th Edition) Blitzer

The equation of the vertical asymptote of the function $f\left( x \right)$ is $\underline{x=1}$.
The vertical asymptote is a vertical line which the function approaches but does not touch. It is clear from the graph that the value of the function is tending to $\infty$, therefore, the vertical asymptote is $x=1$. Therefore, the equation of the vertical asymptote is $x=1$.