Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 2 - P.S. Problem Solving - Page 239: 8c



Work Step by Step

Average rate of change is: $ \dfrac{f(x_2)-f(x_1)}{x_2-x_1}$ So, $ \dfrac{f(x_2)-f(x_1)}{x_2-x_1}= \dfrac{[-(1.25)^2+(4)(1.25)-3]-[-(1)^2+(4)(1)-3]}{1.25-1}$ or, $=\dfrac{\dfrac{7}{16}-0}{0.25}$ or, $=\dfrac{7}{4}$
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