AP EAMCET201822 Apr 2018Morning ShiftMathematicsParabolaActual
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
Options
- A(-1,-5)
- B(-2,-11)
- C(-6,-35)
- D(-7,-41)
Correct answer
C. (-6,-35)
Step-by-step 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).