5)), B(20, f(20)) (15, f(15)), B(20, f(20)) *. Find the length of AB using rigin. equation of the ellipse determined by the given information. (4,3) 5. One vertex at (0, 6), minor axis length = 6 ity = } 7. One focus at (0,4), major axis length = 16 gh (2, 1) and