engineering mathematics MCQ #539

The directrix of the parabola y² = -8x is?

engineering mathematics MCQ #539

  1. Question 1

    Q1. The directrix of the parabola y² = -8x is?

    • A) x = 2
    • B) x = -2
    • C) y = 2
    • D) y = -2

    Answer: x = 2

    Explanation: For y² = -4ax, the directrix is x = a. Here, 4a = 8, so a = 2 and the directrix is x = 2.