The distance from any locus of point to foci?

• 2d

• 2c

• 2b

• 2a

What formula represents the distance from foci?

• 2d

• 2a

• 2b

• 2c

If the direction of the minor axis is vertical , it means that?

• below x-term is a^2

• below y-term is a^2

• below x-term is b^2

• none of the choices

In an ellipse , if a=5 , b=3 , c=4, What is the distance from focus(F1) to focus(F2)?

• 8

• 6

• 10

• 5

In an ellipse , if a=5 , b=3 , c=4, What is the length of the minor axis?

• 6

• 8

• 10

• 12

If translation of an ellipse happens at the same position, which of the following is true?

• It will change all the details of equation in standard form

• Only denominators will change

• Only the center(h,k) will change

• none of the choices

64x^2 + 100y^2 = 6400,

find (h,k)

• (0,0)

• (64,100)

• (2,2)

• (-2,-2)

64x^2 + 100y^2 = 6400,

find the distance from foci ( f1 to f2)

• 64

• 20

• 16

• 12

64x^2 + 100y^2 = 6400,

find coordinates of the vertices

• (10,0),(-10,0)

• (0,10),(0,-10)

• (8,0),(-8,0)

• (0,8),(0,-8)

64x^2 + 100y^2 = 6400,

find b?

• 10

• 8

• 6

• 4