Therefore , the coordinates of the foci are (– 4,0 ) and ( 4,0 ), vertices are (– 5 , 0 ) and ( 5 , 0 ).
Length of the major axis 2a is 10 units length of the minor axis 2b is 6 units and the eccentricity c / a is 4 / 5
Latus rectum is 2b 2 / a = 2 ( 3 ) 2 / 5 = 18 / 5
Hyperbola
A hyperbola is the set of all points in a plane , the difference of whose distances from two fixed points ( focus ) in the plane is a constant