How will u find out that if the point is outside, on or inside the ellipse ?
Hence show that the triangle whose verities are (1,2), (3,-11) and (-2,1) lies wholly inside the ellipse
Look at the standard form equation of the ellipse:
if the constant a>b it represents the length of the major axis, and if a<b it represents the minor axis. The same thing applies to "b".
You can now sketch the ellipse. But you can also check this without drawing a graph, if you have studied the quadratic forms.