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Which equation represents a parabola that has a focus of (0,0) and a directix of y = 2?​
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Which equation represents a parabola that has a focus of (0,0) and a directix of y = 2?​

Which equation represents a parabola that has a focus of (0,0) and a directix of y-example-1
User Bobe
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Answer: D

Explanation:


a=0,\ b=0,\ k=2\\equation\ of\ the\ parabola:\\\\y=((x-a)^2)/(2(b-k)) +(b+k)/(2) \\\\\\y=-(x^2)/(4)+1 \\\\x^2=-4(y-1)\\\\Answer\ D

User Schweerelos
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