Q95 / 160 · AP EAMCET 2018 (22 Apr Shift 1) · Mathematics
The line $y=6 x+1$ touches the parabola $y^2=24 x$. The coordinates of a point $P$ on this line, from which the tangent to $y^2=24 x$ is perpendicular to the line $y=6 x+1$, is
- A$(-1,-5)$
- B$(-2,-11)$
- Correct answerC$(-6,-35)$
- D$(-7,-41)$
Solution
Given, equation of line is y = 6x + 1 and
equation of pa rab ola is $y^2=24 x$.
The locus of the point of intersection of
perpendicular tangent to a parabola is its directrix.
So, required point is the point of intersection of
y = 6x + 1 and direc trix x = − 6.
Hence, its coordinates are (− 6, − 35).
Hence, the correct answer is option: 'C'.