engineering mathematics MCQ #305

The equation of the tangent to the parabola y² = 4x at (1, 2) is

engineering mathematics MCQ #305

  1. Question 1

    Q1. The equation of the tangent to the parabola y² = 4x at (1, 2) is

    • A) x + y = 3
    • B) x - y + 1 = 0
    • C) y = x + 1
    • D) x - y = -1

    Answer: x - y + 1 = 0

    Explanation: Using the point-slope form of the tangent to y² = 4ax: y = mx + a/m, and substituting m = 1 (since the slope at (1, 2) is 1).