Ответ:
\[y = \frac{4}{x}\]
| \[x\] | \[- 4\] | \[- 2\] | \[- 1\] | \[1\] | \[2\] | \[4\] |
|---|---|---|---|---|---|---|
| \[y\] | \[- 1\] | \[- 2\] | \[- 4\] | \[4\] | \[2\] | \[1\] |

\[y < 0\ при\ x < 0.\]
\[y = \frac{4}{x}\]
| \[x\] | \[- 4\] | \[- 2\] | \[- 1\] | \[1\] | \[2\] | \[4\] |
|---|---|---|---|---|---|---|
| \[y\] | \[- 1\] | \[- 2\] | \[- 4\] | \[4\] | \[2\] | \[1\] |

\[y < 0\ при\ x < 0.\]