2 years ago

The focus of a parabola is located at (4,0), and the directrix is located at x = –4.

1 answer:

4 0

The distance between the focus and directrix is, in this case, 8. Since the directrix is at x= something, the parabola opens sideways, and since the directrix is on the left, to the right. In which case, y^2=p(x), where p is 4 times distance of half of distance between directrix and focus. So, the answer is D. y^2=16x. The 4th answer.

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3 years ago

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Answer:

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We know that a tree in the middle is 2.5 feet tall.

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