Question

Axis of a parabola lies along $x$-axis. If its vertex and focus are at distances $2$ and $4$ respectively from the origin, on the positive $x$-axis then which of the following points does not lie on it ?

• A. $(4, -4)$
• B. $(5 , 2 \sqrt{6})$
• C. $(8, 6)$
• D. $6 , 4 \sqrt{2}$

Answer 1

Answer: (C)

equation of parabola is
$y^2 = 8 (x - 2)$
$(8, 6)$ does not lie on parabola.