The gradient (also known as the slope) of a line passing through two points \((x_1, y_1)\) and \((x_2, y_2)\) is given by the formula:

Gradient (\(m\)) = \(\frac{y_2 - y_1}{x_2 - x_1}\)

Given the points (-2, 0) and (0, -4), we can substitute the coordinates into the formula:

Gradient (\(m\)) = \(\frac{-4 - 0}{0 - (-2)} = \frac{-4}{2} = -2\)

So, the gradient of the line passing through the given points is -2.