Consider the equation of a parabola y2=4 a x,(a

Question

Consider the equation of a parabola y2=4 a x,(a<0) which of the following is false - (A) tangent at the vertex is x =0 (B) directrix of the parabola is x =0 (C) vertex of the parabola is at the origin (D) focus of the parabola is at (- a , 0)

Tardigrade Admin · Accepted Answer

Correct answer is (b) directrix of the parabola is x =0Correct answer is (d) focus of the parabola is at (- a , 0)

Q. Consider the equation of a parabola $y^{2} = 4 a x, (a < 0)$ which of the following is false -

tangent at the vertex is $x = 0$

directrix of the parabola is $x = 0$

vertex of the parabola is at the origin

focus of the parabola is at $(- a, 0)$

Correct answer is (b) directrix of the parabola is $x = 0$ Correct answer is (d) focus of the parabola is at $(- a, 0)$

Q. Consider the equation of a parabola y2=4ax,(a<0) which of the following is false -

tangent at the vertex is x=0

directrix of the parabola is x=0