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Question: Answered & Verified by Expert
The line $y=2 x+c$ is a tangent to the parabola $y^2=16 x$, if $c$ equals
MathematicsParabolaJEE Main
Options:
  • A $-2$
  • B $-1$
  • C $0$
  • D $2$
Solution:
2850 Upvotes Verified Answer
The correct answer is: $2$
According to the condition,
$c=\frac{4}{2}=2$\(=\frac{a}{m}\), where \(\mathrm{a}=4, \mathrm{~m}=2\).

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