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Q.

The directrix of the parabola $y^{2} + 4 x + 3 = 0$ is

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a

$x - 1 / 4 = 0$

b

$x + 1 / 4 = 0$

c

$x - 3 / 4 = 0$

d

$x - 4 / 3 = 0$

answer is C.

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Detailed Solution

$y^{2} = - 4 (x + 3 / 4)$ , the directrix is $∣ x + 3 / 4 - 1 = 0$ .

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