How do you find f(-2) given f(x)= -x + 2?

Apr 3, 2018

$\implies f \left(- 2\right) = 4$

Explanation:

$\implies f \left(x\right) = - x + 2$

$f \left(- 2\right)$ means that we evaluate $f \left(x\right)$ by substituting $x = - 2$.

$\implies f \left(x\right) = - x + 2$

$\implies f \left(- 2\right) = - \left(- 2\right) + 2$

$\implies f \left(- 2\right) = 2 + 2$

$\implies f \left(- 2\right) = 4$