Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 7 - Algebra: Graphs, Functions, and Linear Systems - 7.1 Graphing and Functions - Concept and Vocabulary Check: 8

Answer

$x$; $6$

Work Step by Step

RECALL: $f(a)$ represents the value of the function $f$ when $x=a$. To find $f(6)$ in the given function, replace $x$ with $6$ to obtain: $f(x) = 3x+5 \\f(6) = 3(6) + 5 \\f(6) = 18+5 \\f(6) = 23$ Thus, the missing expressions in the given statement are: $x$; $6$
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