Answer
Doesn't make sense.
Work Step by Step
$c$ can be zero, then we have an equation in the form of $ax+by=d$, which can be rearranged in the form $y=mx+e$. Thus the statement doesn't make sense.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 3 - Section 3.3 - Systems of Linear Equations in Three Variables - Exercise Set - Page 219: 55
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