You may be familiar with the idea of slope as a measure of steepness. The formula for slope is usually described as
slope = (change in y) / (change in x)
The slope of a line is often described as a ratio of rise/run. Another way to think of slope is as the amount that the dependent variable changes for each increase by 1 in the independent variable. In other words, as x changes by 1, what happens to y?
The following Interactive Activity explores the concept of slope. Measuring slope requires two points. As you work with the examples in the Interactive Activity, ask yourself why the slope between pairs of points would change or why it would stay the same. Note 6