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You are describing a circle, with its center at the origin and a radius of 4 (the square root of 16)

Q: How do you graph the equation x squared plus y squared equals 16?

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It is the equation of a parabola.

It is the Cartesian equation of an ellipse.

A linear equation ?

Graph and Table: http://i50.tinypic.com/szhr4k.png

The center of the circle given by the equation (x - 3)2 plus (y + 2)2 = 9 is (3,-2).

Related questions

no

The graph is a circle with a radius of 6, centered at the origin.

The equation is y=x(x+1)(x-2)2

Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.

It is a quadratic equation.

It is the equation of a parabola.

No, It's a a quadratic equation because you have X squared.

-2x plus 3y equals 1

It is the Cartesian equation of an ellipse.

(-4,-6)

y = -0.5x plus or minus any number

A linear equation ?