Which ratio of distances is constant for a point on a nondegenerate conic?
a. distance to center: distance to directrix
c. distance to center: distance to vertex
b. distance to focus: distance to vertex
d. distance to focus: distance to directrix?

D. distance to focus:distance to directrix?

Answer with explanation:

A  non degenerate conic that is Conic Section is set of  that is locus of all the points in a plane, such that distance from a fixed point called focus to distance from a fixed line called Directrix is always Constant.This Ratio is called Eccentricity(e).

For, Circle

e=0

In Case of Parabola,

e=Constant

That is, e=1.

For, Ellipse

e<1

For, Hyperbola

e>1

Option D:

            Distance to focus: Distance to Directrix

she will travel a distance in the range of 3 - 11 miles

ljn

step-by-step explanation: