Final answer:
The slope of a line represents the rate of change between two points on the line.
Step-by-step explanation:
The slope of a line represents the rate of change between two points on the line. It tells us how the dependent variable (y) changes for every one-unit increase in the independent variable (x), on average. For example, if the slope is 3, it means that for every increase of 1 on the horizontal axis, there is a rise of 3 on the vertical axis.