To find the slope of the line that passes through the points given, we can use the formula for the slope \( m \) between two points \((x_1, y_1)\) and \((x_2, y_2)\):
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Using the first two points \((0, 9)\) and \((6, 5)\):
- Assign \((x_1, y_1) = (0, 9)\)
- Assign \((x_2, y_2) = (6, 5)\)
Now substituting the values into the slope formula:
\[ m = \frac{5 - 9}{6 - 0} = \frac{-4}{6} = \frac{-2}{3} \]
Thus, the slope of the line is:
\[ \boxed{-\frac{2}{3}} \]