For the above plot of the hyperboloid paraboloid $-\left(\frac{x}{a}\right)^2 + \left(\frac{y}{b}\right)^2 = \frac{z}{c}$, find the parameters a, b and c.
Note that a, b and c are positive integers between 1 and 6 inclusive. Use the mouse to rotate the surface.
Two points on the surface are (2.5, 0, -0.25) and (0, 1, 0.25).
a = b = c =