Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises - Page 22: 109


$x=(+), y=(+)$ or $x=(-), y=(-)$

Work Step by Step

The question asks for the signs of values $x$ and $y$ that would make the statement $xy>0$ true. If the values $x$ and $y$ are known to be nonzero values, a positive $x$ and positive $y$ value would give a product greater than $0$. A negative $x$ and negative $y$ value would also give a product that is greater than $0$.
Update this answer!

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

Update this answer

After 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.