Write an equation of a parabola with vertex at the origin and the given focus.

focus ​(8​,0)
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Part 1
What is the correct​ equation?
A.y squared equals negative 32 x
y squared equals negative 32 x
B.x equals StartFraction 1 Over 32 EndFraction y squared
x equals StartFraction 1 Over 32 EndFraction y squared
C.x equals one eighth y squared
x equals one eighth y squared
D.y equals 32 x squared
y equals 32 x squared

1 answer

Since the focus is at (8,0) and the vertex is at the origin, we know that the focal length is equal to the x-coordinate of the focus, which is 8.

The equation of a parabola with vertex at the origin and focal length of 8 is of the form x = a*y^2.

Substitute the focus coordinates into the equation x = a*y^2:

8 = a*0^2
a = 8

Therefore, the correct equation is x = 8y^2.

Answer: x = 8y^2
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