An equation of an ellipse is given. x2 + 4y2 = 16 (a) Find the vertices, foci, and eccentricity of the ellipse. vertex (x, y ) = (smaller x-value) vertex (x, y ) = (larger x-value) focus (X, y ) = (smaller x-value) focus (x, y ) = (larger x-value) eccentricity (b) Determine the length of the major axis. Determine the length of the minor axis