# How do you evaluate the function f(x)=3x-7 for f(6)?

$f \left(6\right) = 11$
We want to plug in $6$ for wherever we see $x$ in the original function.
$f \left(6\right) = 3 \left(6\right) - 7$
$f \left(6\right) = 18 - 7$
$f \left(6\right) = 11$