# Let f(x) = 12/(4 x + 2 how do you find f(-1)?

Jul 5, 2016

$f \left(- 1\right) = - 6$

#### Explanation:

All we have to do is plug in $- 1$ for $x$.

So:

$f \left(x\right) = \frac{12}{4 x + 2}$

Plug in $- 1$:

$f \left(- 1\right) = \frac{12}{4 \left(- 1\right) + 2}$

Simplify the denominator:

$f \left(- 1\right) = \frac{12}{-} 2$

Divide:

$f \left(- 1\right) = - 6$