Question: A surface in space is defined by the equationx 2 -y=1 . Which one of these is true? 1. The surface is a paraboloid. 2.

A surface in space is defined by the equationx2-y=1 . Which one of these is true?

1. The surface is a paraboloid.

2. The surface is a hyperboloid of two sheets.

3. The surface is a cylinder with rulings parallel to the-axis.

4. The surface is a cylinder whose generating curve is an ellipse.

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