\[f(x) = \frac{1}{3}x - 8\]
\[\frac{1}{3}x - 8 = 0\]
\[\frac{1}{3}x = 8\ \ \ \ \]
\[x = 24\]
\[С\ осью\ x \Longrightarrow \ \ \ (24;\ \ 0)\]
\[f(0) = - 8\]
\[С\ осью\ y \Longrightarrow \ (0;\ - 8)\]
\[Ответ:\ \ (24;0),\ \ \ (0;\ - 8).\]