Question

Equation of tangent to the parabola $y^2=16x$ at $P(3,6)$ is

• A. $4x-3y+12=0$
• B. $3y-4x-12=0$
• C. $4x-3y-24=0$
• D. $3y-x-24=0$

Answer 1

Answer: (B)

Equation of tangent to parabola $y^2=16x$ at $P(3,6)$ is
$6y=8(x+3)$
$\Rightarrow 3y=4x+12$
$\Rightarrow 3y-4x-12=0$