ГДЗ по алгебре 7 класс Мерзляк Задание 996

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\[x = - 2;\]

\[(0;0);\ \ (2;\ - 2)\ \]

\[y = \text{kx}\text{\ \ }\]

\[- 2 = 2k\text{\ \ }\]

\[k = - 1 \Longrightarrow \ \ y = - x;\]

\[(0;3);\ \ ( - 1;0)\]

\[y = kx + b\ \]

\[3 = 0 + b \Longrightarrow \ \ b = 3\]

\[0 = - k + 3\ \ \]

\[k = 3 \Longrightarrow \ \ y = 3x + 3.\]

\[(4;0),\ \ (0;\ - 2),\]

\[y = kx + b\]

\[\ - 2 = 0 + b \Longrightarrow \ \ b = - 2\]

\[0 = 4k - 2\]

\[4k = 2\ \]

\[k = 0,5 \Longrightarrow \ y = 0,5x - 2.\]