To calculate the slope of the line, we need two points from the graph. The formula for the slope \( m \) of a line passing through two points \( (x_1, y_1) \) and \( (x_2, y_2) \) is given by:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Since I do not have access to the image mentioned, please provide the coordinates of the two points on the line, and I can help you calculate the slope from that information.