Ответ:
\[y = 7x - 8;\ \ y = 5x - 6;\]
\[7x - 8 = 5x - 6\]
\[7x - 5x = - 6 + 8\]
\[2x = 2\]
\[x = 1;\]
\[y = 7x - 8 = 7 - 8 = - 1.\]
\[Точка\ пересечения:(1; - 1).\]
\[y = 7x - 8;\ \ y = 5x - 6;\]
\[7x - 8 = 5x - 6\]
\[7x - 5x = - 6 + 8\]
\[2x = 2\]
\[x = 1;\]
\[y = 7x - 8 = 7 - 8 = - 1.\]
\[Точка\ пересечения:(1; - 1).\]