To solve the equation \(-4y - 9 = 18\), follow these steps:
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Add 9 to both sides of the equation:
\[ -4y - 9 + 9 = 18 + 9 \]
This simplifies to:
\[ -4y = 27 \]
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Now, divide both sides by -4 to solve for \(y\):
\[ y = \frac{27}{-4} \]
This can be simplified to:
\[ y = -\frac{27}{4} \]
So the solution is:
\[ y = -\frac{27}{4} \]