X 2 100 y 2 100 1 July 8, 2019 16 32 64 128 X 2 100 y 2 64 1 X 2 100 y 2 36 1 X 2 25 y 2 100 1 X 2 100 y 2 400 1 X 2 64 y 2 100 1 the foci are located at 9 x 2 )( 100 y 2 )- 120xy X ^ 2 + y ^ 2 = 100