In a earlier section we looked at graphing circles & since circles are actually special cases of ellipses already we've got most of the tools under our belts to graph ellipses. All that we actually need here to get us begun is then standard form of the ellipse & a little information on how to interpret it.
Following is the standard form of an ellipse.
(x - h )^{2} / a^{2} + ( y - k )^{2} /b^{2} =1