In this lesson, you applied what you have previously learned about unit rates to the concept of slope. For a proportional situation, the unit rate is the same as the slope of the line that represents the proportional data.

In the figure below, the graph shows the cost of avocados.

The unit rate from the data is $1.50 per avocado, which is the same as the slope of the line connecting the data points, 3 over 2 3 2 .