look at the graph: what is the equation of the vertical asymptote?

Explanation:

Step1: Identify vertical - asymptote concept

A vertical asymptote is a vertical line $x = a$ where the function approaches infinity or negative infinity as $x$ approaches $a$.

Step2: Observe the graph

In the given graph, as $x$ approaches $0$, the function values go to positive or negative infinity.

Answer:

$x = 0$