The directrix of the parabola is

MATHEMATICS · Single correct · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

The directrix of the parabola x2−4x−8y+12=0x^2-4x-8y+12=0 is (1) y=0y=0 (2) x=1x=1 (3) y=−1y=-1 (4) x=−1x=-1

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