\[y = \frac{1}{4}x\]
\[y(8) = 2;\ \ \ \]
\[y\left( \frac{1}{2} \right) = \frac{1}{8};\ \ \ \]
\[y( - 4) = - 1;\ \ \ \]
\[y( - 3) = - \frac{3}{4}.\]