Solve the following pairs of equations.
$2 x - 4 = 0$ ; $4 x + y + 4 = 0$

(2, - 12)

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(1, - 12)

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(2, 12)

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None of these

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Solution

The correct option is A $(2, - 12)$
$2 x - 4 = 0 ⟹ x = 2$
and
$4 x + y = - 4$
$4 (2) + y = - 4$
$8 + y = - 4$
$y = - 12$
$\Rightarrow x = 2, y = - 12$

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