To find the value of \( x \) given \( y = -4 \) and the equation \( x = -3y + 5 \), we can substitute \( y \) into the equation.
Start with the equation:
\[ x = -3(-4) + 5 \]
Now calculate \( -3(-4) \):
\[ -3(-4) = 12 \]
So, substituting back into the equation for \( x \):
\[ x = 12 + 5 \]
Now, add the two numbers:
\[ x = 17 \]
Thus, the value of \( x \) is \( \boxed{17} \).