becomes principal axis = x=axis (y=0) center = (0,0) vertices = (±√5,0) co-vertices = (0,±√2) foci = (±√3,0) length of the major axis = 2√5 length of minor axis = 2√2 graph: ---------------------------- principal axis y=-5 center = (-2,-5) vertices = (-7,-5), (3,-5) co-vertices = (-2,-6), (-2,-4) foci = (-2√(6)±2,-5) length of the major axis = 10 length of minor axis = 2 graph: Edwin