Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - 5-7 Scatter Plots and Trend Lines - Practice and Problem-Solving Exercises - Page 339: 21


a) $y = 10.53*x+88.2$. b) $m = 10.53$, For every year after 1990, an additional 10.53 million units were sold. c) y-intercept = 88.2, the number of estimated units sold (in millions) in 1990.

Work Step by Step

The equation of the best fit line was $y = 10.5*x+88.2$. The graph was made in Microsoft Excel.
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