Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-3 Real Numbers and the Number Line - Practice and Problem-Solving Exercises - Page 20: 29


Integers, Rational numbers

Work Step by Step

The number $−1$ is an integer because it is not a fractional number. Integers are any number, positive or negative, that are not fractions. Rational numbers are any numbers that you can write as the quotient of two integers. $−1$ can be rewritten as $\frac{−1}{1}$, making it a rational number.
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