Engineering Board Exam Reviewer · Parabolas · medium
Find the equation of the parabola with vertex at the origin and focus at (0,-4).
- x2 - 16 y = 0
- 16 x + y2 = 0
- x2 + 8 y = 0
- x2 + 16 y = 0
Answer
D. x2 + 16 y = 0
Solution
The axis is vertical and p=-4, so x2=4py=-16y, i.e. x2+16y=0.
More Parabolas questions
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