The slope \( m \) of a line passing through two points \((x_1, y_1)\) and \((x_2, y_2)\) is given by:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
For the points \((-2, -5)\) and \((-6, -21)\):
\[ m = \frac{-21 - (-5)}{-6 - (-2)} = \frac{-21 + 5}{-6 + 2} =
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