Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 3 - Section 3.4 - Slope and Rate of Change - Exercise Set: 57

Answer

Slope is $1.25$. Approximately, there's an increase of 1.25 million households with televisions every year.

Work Step by Step

$y$ is the number of households with televisions. $x$ is the year. Slope $=\frac{\Delta y}{\Delta x}$ Slope $=\frac{112-109.5}{2007-2005}$ Slope $=\frac{2.5}{2}$ Slope $=1.25$ Approximately, there's an increase of 1.25 million households with televisions every year.
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