Question
Question: If (2, 0) is the vertex and y-axis is the directrix of the parabola then its focus is...
If (2, 0) is the vertex and y-axis is the directrix of the parabola then its focus is
A
(0, 0)
B
(4, 0)
C
(8, 0)
D
None of these
Answer
(4, 0)
Explanation
Solution
Distance of vertex from y- axis is 2 and it is half the distance of focus from directrix.
\ focus is (4, 0).