\[\boxed{\text{184\ (184).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[y = \frac{8}{x}\]
\[\textbf{а)}\]
\[x = 2 \rightarrow y = 4;\]
\[x = 4 \rightarrow y = 2;\]
\[x = - 1 \rightarrow y = - 8;\]
\[x = - 4 \rightarrow y = - 2;\]
\[x = - 5 \rightarrow y = - 1,6.\]
\[\textbf{б)}\ x = \frac{8}{y}\]
\[y = - 4 \rightarrow x = - 2;\]
\[y = - 2 \rightarrow x = - 4;\ \]
\[y = 8 \rightarrow x = 1.\]