A) \[x+3=0\]
B) \[x=3\]
C) \[y+3=0\]
D) \[y-3=0\]
Correct Answer: B
Solution :
Comparing the parabola\[{{y}^{2}}=-12x\]with \[{{y}^{2}}=-4ax,\]we get\[a=3,\] \[\therefore \]Equation of directrix is\[x=3\]You need to login to perform this action.
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