The three statements that properly describe "slope" are:
- Change in y-value over change in x-value - This is the fundamental definition of slope.
- The fraction with numerator \( y_2 - y_1 \) and denominator \( x_2 - x_1 \) - This represents the slope formula, which is \(\frac{y_2 - y_1}{x_2 - x_1}\).
- The fraction with numerator "rise" and denominator "run" - This relates to the slope concept, where "rise" refers to the change in y (vertical change) and "run" refers to the change in x (horizontal change).
The other options do not correctly represent "slope."