College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.8 - Solving Basic Equations - P.8 Exercises - Page 59: 3


(a) linear (b) not linear (c) linear

Work Step by Step

(a) $\displaystyle \frac{x}{2}+2x=10$ is the same as $\displaystyle \frac{5}{2}x-10=0$, which is linear. (b) $\displaystyle \frac{2}{x}-2x=1$ is not linear because it has the term $x^{-1}$ and linear equations can't have negative powers of $x$. (c) $x+7=5-3x$ is the same as $4x+2=0$, which is linear.
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