Answer
The equation represents linear function because we can rewrite it in the form $y=mx+b$.
Work Step by Step
You can rewrite the equation $y=x+9$ as $y=1x+9$ which is in the form $y=mx+b$.So, this equation represents a linear function.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 3 - Graphing Linear Functions - 3.2 - Linear Functions - Monitoring Progress - Page 113: 5
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