\[\boxed{\text{309}\text{\ (309)}\text{.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[y = 2,7x - 8\ \ \ \ и\ \ \ y = 1,2x + 7\]
\[2,7x - 8 = 1,2x + 7\]
\[2,7x - 1,2x = 7 + 8\]
\[1,5x = 15\]
\[x = 15\ :1,5 = 150\ :15\]
\[x = 10\]
\[y = 2,7 \cdot 10 - 8 = 27 - 8 = 19.\]
\[A(10;19) - точка\ пересечения\ \]
\[графиков\ данных\ функций.\]
\[Ответ:A\ (10;19).\]
\[\boxed{\text{309.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[y = \frac{x + 2}{x - 6}\]
\[Область\ определения:\]
\[x - 6 \neq 0\]
\[x \neq 6.\]
\[x\] | \[- 3\] | \[- 2\] | \[- 1\] | \[0\] | \[1\] | \[2\] | \[3\] |
---|---|---|---|---|---|---|---|
\[y\] | \[\frac{1}{9}\] | \[0\] | \[- \frac{1}{7}\] | \[- \frac{1}{3}\] | \[- \frac{3}{5}\] | \[- 1\] | \[- 1\frac{2}{3}\] |