Describe the graph of x2 + 4y2 + 16z2 = 2x - 8y.
◦ a hyperboloid of one sheet
◦ a hyperboloid of two sheets
◦ a hyperbolic paraboloid
◦ an elliptic paraboloid
◦ an ellipsoid (or a sphere)
◦ a cylinder (circular, elliptic, parabolic, or hyperbolic)
◦ a cone (circular, elliptic, parabolic, or hyperbolic)
◦ none of the above