-10 -9 -8 -7 6 -5 -4 -3 -2 -1 2 3 4 5 6 7 8 9 10 X -1 -2 For the ellipse shown above the center is at The length of the major axis is units so a= The length of the minor axis is units so b= The foci are on the major axis, units from the center