Line of Best Fit

The number of households in a local community that do not maintain a landline. (x = 0 represents the year 2000)

The line of best fit is the line that is closest to all of the points that are included in a data set. In this topic, you will learn how to use the graphing calculator to determine the equation of the line of best fit. You will also use the line of best fit to make predictions.

Essential Questions

• How can you determine the equation of the line of best fit?
• How can you use mathematical models of linear functions to solve problems?