2023-02-18

Given $f\left(x\right)=8x-9$ how do you find f(-2)?

Samantha Summers

Given solution:
If $f\left(x\right)=8x-9$to find $f\left(-2\right)$ replace $x$ in the equation with $\left(-2\right)$
(and remember that $8x$ means $8×x$)
$f\left(-2\right)=8×\left(-2\right)-9$
$\text{XXxX}=-16-9$
$\text{XXXx}=-25$

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