Answer
slope = $5$
Work Step by Step
RECALL:
slope = $\dfrac{y_2-y_1}{x_2-x_1}$ where $(x_1, y_1)$ and $(x_2, y_2)$ are the coordinates of the two points on the line.
Use the points on the line $(2, -4)$ and $(3, 1)$ to obtain:
slope = $\dfrac{1-(-4)}{3-2}=\dfrac{1+4}{1}=\dfrac{5}{1}=5$
