engineering mathematics MCQ #475

The equation of the directrix of the parabola x² = -4ay is

engineering mathematics MCQ #475

  1. Question 1

    Q1. The equation of the directrix of the parabola x² = -4ay is

    • A) y = a
    • B) y = -a
    • C) x = a
    • D) x = -a

    Answer: y = a

    Explanation: For x² = -4ay, the directrix is y = a, since the parabola opens downwards.