Algebra 1

by Hall, Prentice

Published by Prentice Hall

ISBN 10: 0133500403

ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - 5-4 Point-Slope Form - Standardized Test Prep - Page 318: 37

Answer

a) Please see the graph. b) $y = .1*x + 39.99$

Work Step by Step

a) The graph was created in Microsoft Excel. b) $m= \frac{47.99-44.99}{80-50}$ $m= 3/30$ $m= .1$ $y = mx + b $ $47.99 = .1*80 + b$ $47.99 = 8 + b$ $47.99 - 8 = 8 + b -8$ $39.99 = b$

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