\[y = \frac{1}{5}x\]
\[y(10) = 2;\ \ \]
\[y\left( \frac{1}{6} \right) = \frac{1}{30};\ \ \]
\[y( - 5) = - 1;\ \ \]
\[y( - 7) = - \frac{7}{5} = - 1,4.\]