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

\[y(x) = - 1\]
\[- x^{2} = - 1\]
\[x^{2} = 1\]
\[x = \pm 1.\]
\[y = {- x}^{2}\]
| \[x\] | \[- 2\] | \[- 1\] | \[0\] | \[1\] | \[2\] |
|---|---|---|---|---|---|
| \[y\] | \[- 4\] | \[- 1\] | \[0\] | \[- 1\] | \[- 4\] |

\[y(x) = - 1\]
\[- x^{2} = - 1\]
\[x^{2} = 1\]
\[x = \pm 1.\]