engineering mathematics MCQ #400

The equation of the tangent to the parabola y² = 8x at (2, 4) is

engineering mathematics MCQ #400

  1. Question 1

    Q1. The equation of the tangent to the parabola y² = 8x at (2, 4) is

    • A) x - y + 2 = 0
    • B) x + y - 6 = 0
    • C) x - y + 4 = 0
    • D) x + y + 2 = 0

    Answer: x - y + 2 = 0

    Explanation: The tangent to y² = 4ax at (at², 2at) is ty = x + at². For y² = 8x, a = 2, so at t = 1, the point is (2, 4) and the tangent is y = x + 2.