### Home > PC3 > Chapter 10 > Lesson 10.1.2 > Problem 10-25

10-25.

Sketch an ellipse centered at the origin with focal points at on your ellipse and label it with the coordinates

Write an expression for the sum of the distances from point

to each of focal points.The distance from point

tois: If the “string” used to create the ellipse is

units long, use this distance with your expression from part (a) to create an equation. See how far you can get rewriting your equation from part (b) in graphing form.