To find the value of \( f(-8) \) for the function \( f(x) = -6(1 - x) \), you can substitute \(-8\) for \(x\):
\[ f(-8) = -6(1 - (-8)) \]
Now simplify the expression inside the parentheses:
\[ 1 - (-8) = 1 + 8 = 9 \]
Now substitute this back into the function:
\[ f(-8) = -6(9) = -54 \]
Thus, the value of \( f(-8) \) is \(-54\).