Answer
The function is odd.
Work Step by Step
The given function is
$\Rightarrow r(x)=-8x$
Substitute $-x$ for $x$.
$\Rightarrow r(-x)=-8(-x)$
Simplify.
$\Rightarrow r(-x)=8x$
Because $r(-x)=-r(x)$, the function is odd.
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