Answer
See below.
Work Step by Step
Let the equation be $ax+by-12=0$
The y-intercept is at $x=0$, so then: $-6b-12=0$, thus $b=-2$.
If $y=mx+b$ is the equation of a line, then $m$ is the slope. So $m=0.5$, thus $a=0.5b=-1$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 2 - Functions and Graphs - Exercise Set 2.3 - Page 258: 114
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