#### Answer

not one-to-one

#### Work Step by Step

We find many horizontal lines that intersect the graph more than once.
One line is enough to fail the test. so we take the x-axis ($y=0)$.
Horizontal Line Test: FAIL.
The function is not one-to-one.

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

not one-to-one

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.