What is $abs(-9)$ ?

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Answer 1 · 2015-06-20T07:05:44

$abs(-9) = 9$

If $x > 0$ then $abs(x) = x > 0$

If $x = 0$ then $abs(x) = 0$

If $x < 0$ then $abs(x) = -x > 0$

For all $x$ we have $abs(x) >= 0$

$abs(x)$ is the 'size' of $x$ , regardless of its sign.

Equivalently, it is the distance of $x$ from $0$

What is abs(-9)abs(-9)?