Question

What other way can −4 be represented as a rational number?

Answer 1

The number \(-4\) can be represented as a rational number in various ways. A rational number is any number that can be expressed as a fraction \(\frac{a}{b}\) where \(a\) and \(b\) are integers and \(b \neq 0\).

Here are several ways to represent \(-4\) as a rational number:

1. As a fraction: \(-4\) can be expressed as \(\frac{-4}{1}\).
2. As another fraction: It can also be expressed as \(\frac{-8}{2}\) or \(\frac{-12}{3}\), and so on. In general, \(-4\) can be written as \(\frac{-4n}{n}\) for any non-zero integer \(n\).
3. In decimal form: \(-4\) can be expressed as \(-4.0\), which is still a rational number.

All of these forms demonstrate that \(-4\) is a rational number.