The correct explanation for the formula for slope is:
Slope is the ratio of rise over run. When given two points, you can determine the rise by finding the difference between the y-coordinates. You can determine the run by finding the difference between the x-coordinates.
This means that the slope \( m \) between two points \((x_1, y_1)\) and \((x_2, y_2)\) can be calculated using the formula:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
This definition accurately describes how to compute the slope using the differences in the y and x coordinates, respectively.