Answer
$2.9$
Work Step by Step
$f(6.9)$ is the y-value of the function at $x=6.9$, which, according to the graph is $2.9$, hence $f(6.9)=2.9$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 1 - Linear Functions and Change - 1.1 Functions and Function Notation - Exercises and Problems for Section 1.1 - Exercises and Problems - Page 7: 11
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