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Question: Answered & Verified by Expert
In the parabola $y^2=6 x$, the equation of the chord through vertex and negative end of latus rectum, is
MathematicsParabolaJEE Main
Options:
  • A $y=2 x$
  • B $y+2 x=0$
  • C $x=2 y$
  • D $x+2 y=0$
Solution:
2415 Upvotes Verified Answer
The correct answer is: $y+2 x=0$
Vertex $\equiv(0,0)$. End points of latus rectum are $(a, \pm 2 a)$. Here $\quad a=\frac{6}{4}$
Therefore, $-v e$ end of latus rectum is $\left(\frac{3}{2},-3\right)$
Line through the point is $y=\frac{-3}{3 / 2} x$ or $y+2 x=0$.

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