Answer
$3x - 7y = 21$
$y = \frac{3}{7}x - 3$
Work Step by Step
$15x - 35y = 105$
15, 35 and 105 are multiples of 5, and therefore can divide the whole equation by 5.
$3x - 7y = 21$
$-7y = -3x + 21$
$y = \frac{3}{7}x - 3$
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 10 - Section 10.5 - Equations of Lines - Exercises - Page 471: 2
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