Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 2 Linear Equations and Functions - 2.6 Draw Scatter Plots and Best-Fitting Lines - 2.6 Exercises - Mixed Review - Page 120: 36

Answer

-2

Work Step by Step

Plugging x=9 into the equation, we find: $$f(x) = -x +7 \\ f(9) = -9 + 7 \\ f(9)=-2$$
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