engineering mathematics MCQ #519

Directrix of parabola y² = -16x:

engineering mathematics MCQ #519

  1. Question 1

    Q1. Directrix of parabola y² = -16x:

    • A) x = 4
    • B) x = -4
    • C) y = 4
    • D) y = -4

    Answer: x = 4

    Explanation: Standard form y² = -4ax → a=4. Directrix x = a.