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Multivariable Calculus

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Moderate

Recognize the Surface

MVCALC-YKY6EB

Which answer describes the surface that has equation:

$$x^2 - 9 =z $$

...in the space?

A

A sphere.

B

An ellipsoid.

C

An elliptic paraboloid.

D

A hyperbolic paraboloid.

E

Some other surface.