Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 3 - Cumulative Review: 41


Yes, $y=2x+1$ is a function.

Work Step by Step

The relation $y=2x+1$ will be a function if each x-value corresponds to just one y-value. For each x-value that we plug into the equation, the addition and multiplication performed give us a single value for y, so only one y-value will be associated with each x-value. Therefore, $y=2x+1$ must be a function.
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