Question

if $f(x)=\frac{1}{x}$, what is $f(-2)$?
a. $-\frac{1}{2}$
b. $-\frac{1}{4}$
c. $-\frac{1}{8}$
d. $-2$

Explanation:

Step1: Substitute $x=-2$ into $f(x)$

$f(-2) = \frac{1}{-2}$

Step2: Simplify the fraction

$f(-2) = -\frac{1}{2}$

Answer:

a. $-\frac{1}{2}$