# A.3.5.3 Fitting Lines with Technology

- Author:
- Katie Akesson

The weight of ice cream sold at a small store in pounds (x) and the average temperature outside in degrees Celsius (y) are recorded in the table. Use this link: https://www.desmos.com/calculator/hbkatvb9qp to create a scatter plot and sketch a line that fits the data well. Find the slope and y-intercept for the best fit line and write an equation for the best fit line. What do the slope and y-intercept mean in this situation?

Use your best fit line to predict the y value when the x value is 10. Is this a good estimate for the data? Explain your reasoning.