If the vertex and the focus of a parabola are (-1, 1) and (2, 3) respectively then the equation of the directrix is

JEE Advanced Mathematics question

If the vertex and the focus of a parabola are and respectively then the equation of the directrix is

Answer: (A)

The vertex is the midpoint of and (foot of the directrix on the axis), so . The directrix is

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-108988