How do you find the range of $f(x)=3x+2$ given the domain D={-2, 0, 2}?

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How do you find the range of $f(x)=3x+2$ given the domain D={-2, 0, 2}?

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Answer 1 · 2015-04-13T13:04:34

If your Domain is a finite set of discrete values, the Range is the finite set of discrete values obtained by applying the function to the values of the Domain

$f(x) = 3x+2$

Domain $={-2,0,2}$

Range $={f(-2),f(0),f(2)}$
$= {-4,2,8}$

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How do you find the range of $f(x)=3x+2$ given the domain D={-2, 0, 2}?

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