Hi
Note: Standard Equation for an ellipse is
where Pt(h,k) is the center and vertices are determined by distance of a and b from center.
In this case: Pt(0,0) is the Center.
Vertices (-6,0) and (6,0). (0,-4) and (0,4)
Foci: c^2 = 36-16 = 20 c = 2sqrt(5)=4.47 Foci are (4.47,0) and (4.47,0)
Minor axis is x = 0