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Using graphical method, solve the following system of equations :
$3x + y + 4 = 0$ and $3x - y + 2 = 0$
$3x + y + 4 = 0$ and $3x - y + 2 = 0$
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$3x + y = -4$
$3x - y = -2$
$2$ marks for each correct line
Correct solution $x = -1, y = -1$._a_1.png)
$3x - y = -2$
$2$ marks for each correct line
Correct solution $x = -1, y = -1$