# The paramet

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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