Question

The line y = x + 1 is a tangent to the curve y² = 4x at the point

(A) (1, 2)

(B) (2, 1)

(C) (1, −2)

(D) (−1, 2)

Answer 1

The equation of the given curve is y² = 4x 

Differentiating with respect to x, we have:

Hence, the line y = x + 1 is a tangent to the given curve at the point (1, 2).

The correct answer is A.