Major axis of the given ellipse lie on x-axis.
Equation of the ellipse will be of the form: x2/a2 + y2/b2 = 1
Whose vertices (±a, 0) and foci (±c, 0)
Here, a = 4
Ends of minor axis: (0, ±3), let A(0, -3) and B(0, 3)
⇒ AB = 6 units = length of minor axis.
⇒ 2b = 6 or b = 3
Therefore, required equation is : x2/16 + y2/9 = 1