To find the slope of the line that passes through the points \((-4, 2)\) and \((-5, 0)\), we can use the formula for the slope \( m \) which is given by:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Here, we can assign \( (x_1, y_1) = (-4, 2) \) and \( (x_2, y_2) = (-5, 0) \).
Now, substituting the coordinates into the slope formula:
\[ m = \frac{0 - 2}{-5 - (-4)} \]
Simplifying the numerator and the denominator:
\[ m = \frac{-2}{-5 + 4} = \frac{-2}{-1} \]
This simplifies to:
\[ m = 2 \]
Thus, the slope of the line that passes through the points \((-4, 2)\) and \((-5, 0)\) is \(\boxed{2}\).