Ответ:
\[y = - \sqrt{x}\]
| \[x\] | \[9\] | \[4\] | \[1\] | \[0\] |
|---|---|---|---|---|
| \[y\] | \[- 3\] | \[- 2\] | \[- 1\] | \[0\] |

\[\lbrack 5;9\rbrack\ \]
\[y_{\min} = - 3\]
\[y_{\max} = - \sqrt{5}\]
\[y = - \sqrt{x}\]
| \[x\] | \[9\] | \[4\] | \[1\] | \[0\] |
|---|---|---|---|---|
| \[y\] | \[- 3\] | \[- 2\] | \[- 1\] | \[0\] |

\[\lbrack 5;9\rbrack\ \]
\[y_{\min} = - 3\]
\[y_{\max} = - \sqrt{5}\]