Algebra: A Combined Approach (4th Edition)

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

Chapter 3 - Section 3.5 - Equations of Lines - Exercise Set - Page 254: 61

Answer

a) $y=90000x+83000$ b) estimated 533000 vehicles

Work Step by Step

a) 2004 had 83000 vehicles 2007 had 353000 vehicles $2004-2004 = 0$ $2007-2004 = 3$ $(0,83000)$ and $(3,353000)$ $m=(353000-83000)/(3-0)$ $m=270000/3$ $m=90000$ $y=mx+b$ $y=90000*x+b$ $353000=90000*3+b$ $353000 = 270000+b$ $83000 = b$ $y=90000x+83000$ b) $y=90000x+83000$ In 2009, $2009-2004=5$ $y=90000x+83000$ $y=90000*5+83000$ $y=450000 + 83000$ $y=533000$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.