Identify the type of quadric surface defined by the equation


and find all x-, y-, and z-intercepts of the resulting graph. Sketch the graph of this quadric surface on paper.

The quadric surface is a / an with
x-intercepts when ,
y-intercepts when , and
z-intercepts when .

Enter your answers as comma separated lists, or enter NONE if there are no intercepts of a particular type.

In order to get credit for this problem all answers must be correct.