Algebra 1

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

Chapter 9 - Quadratic Functions and Equations - 9-7 Linear, Quadratic, and Exponential Models - Practice and Problem-Solving Exercises - Page 579: 25


a) Please see the graph. Linear b) 600 is the difference between each pair, and this supports the line being linear. c) $y=120x+5100$ d) 8,700 people

Work Step by Step

a) The graph was made using graphing software. b) $5700-5100=600$ $6300-5700=600$ $6900-6300=600$ c) $m=(5700-5100)/(5-0)$ $m=600/5$ $m = 120$ $y=120x+b$ $5700=120(5)+b$ $5700=600+b$ $5700-600=b$ $5100=b$ $y=120x+5100$ d) $2050-2020=30$ $y=120*30+5100$ $y=3600+5100$ $y=8700$
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