A few days ago
Jenny V.

Is this a parabola?

-xy + 3y^2 – 4x + 2y + 8 = 0

Top 2 Answers
A few days ago
Anonymous

Favorite Answer

no

rearranging you get

x = (3y^2 + 2y + 8) / (y+4)

which is not a quadratic (ie parabola )

if you could make the (y+4) part disappear it would be though

since

x = 3y^2 + 2y + 8 is a parabola in the y x plane

Parabola’s in general look like

y = ax^2 + bx + c in the x y plane

or

x = ay^2 + by + c in the y x plane

where a,b,c are numbers

.

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A few days ago
fstladylaudie
A u-shaped curve with certain specific properties. Formally, a parabola is defined as follows: For a given point, called the focus, and a given line not through the focus, called the directrix, a parabola is the locus of points such that the distance to the focus equals the distance to the directrix.

Note: It is a common error to call any u-shaped curve a parabola. A parabola must satisfy the conditions listed above, and a parabola always has a quadratic equation.

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