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The vertex of a parabola is the point (a...

The vertex of a parabola is the point (a, b) and latus-rectum is of length l. If the axis of the parabola is along the positive direction of y-axis, then its equation is

A

`(x + a)^(2) =(l)/(2)(2y-2b)`

B

`(x -a)^(2)=(l)/(2)(2y-2b)`

C

`(x + a)^(2) = (l)/(4)(2y -2b)`

D

`(x -a)^(2)=(l)/(8)(2y - 2b)`

Text Solution

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The correct Answer is:
B
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