Вопрос:

Ответ:

\[y = 4x + 3;\ \ \ \ y = \frac{2}{3}.\]

\[\frac{2}{3} = 4x + 3\ \ \ \ | \cdot 3\]

\[2 = 12x + 9\]

\[12x = 2 - 9\]

\[12x = - 7\]

\[x = - \frac{7}{12}.\]

\[Ответ:при\ x = - \frac{7}{12}.\]