Answer:
The slope of the vertical line is Undefined
Step-by-step explanation:
Given the line shown on the graph in the attached image.
we want to find the slope of the line;

For the given line, the rise is infinity and the run is zero.
So, the slope will be;
![\begin{gathered} \text{slope = }(\infty)/(0) \\ \therefore \\ \text{slope = undefined} \end{gathered}]()
Therefore, the slope of the vertical line is Undefined