Q. 55.0( 3 Votes )

The paramet

Answer :

Given the parametric equations of a parabola x = t2 + 1 and y = 2t + 1.


Consider ,





(y - 1)2 = 4(x - 1)


Comparing with the standard form of parabola (y - a)2 = 4b(x - c) we get,


4b = 4


b = 1


The equation of the directrix is x - c = - b


Directrix is x - 1 = - 1


Directrix is x = 1 - 1


Directrix is x = 0


The correct option is A

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