Decide whether the following function is linear or not: $$g(w) = - \frac{1 - 12 w}{3}$$ If so write the equation in slope-intercept form, $g(w) = mw + b$, and enter the values for $m$ and $b$ in the blanks below. If the expression is not linear, write none in both blanks.

$m =$
$b =$