۳- پنج جواب برای هر یک از معادله‌های زیر بنویسید. $3x - 4y = 12$ $\left\{ \begin{aligned} x &= 0 \\ y &= (-3) \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 4 \\ y &= 0 \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 8 \\ y &= 3 \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 12 \\ y &= 6 \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 16 \\ y &= 9 \end{aligned} \right\}$ $y = 2x - 1$ $\left\{ \begin{aligned} x &= 3 \\ y &= 5 \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 1 \\ y &= 1 \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 4 \\ y &= 7 \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 0 \\ y &= (-1) \end{aligned} \right\} \quad \left\{ \begin{aligned} x &= 2 \\ y &= 3 \end{aligned} \right\}$