\[\boxed{\text{1158.\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
\[y = 3,5x - 7\]
\[y = 0:\]
\[3,5x = 7\]
\[x = 2.\]
\[x = 0:\]
\[y = - 7.\]
\[\textbf{а)}\ y = - 5x - 10.\]
\[\textbf{б)}\ (2;0):\]
\[y = - 3,5x + 7.\]
\[\textbf{в)}\ (0; - 7):\]
\[y = - 5x - 7.\]