Answer
The student likely meant to say 'perpendicular' instead of 'parallel'.
Another line parallel to $y= 1/3*x + 1$ is actually $y = 1/3*x$.
Work Step by Step
$1/3 * -3 = -1$
The lines are perpendicular, not parallel.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 5 - Linear Functions - 5-6 Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises - Page 331: 32
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