SOLUTION: Find the standard form of the equation of each ellipse satisfying the given conditions; Endpoints of major axis:(7,9) and (7,3) Endpoints of minor axis: (5,6) and (9

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Find the standard form of the equation of each ellipse satisfying the given conditions; Endpoints of major axis:(7,9) and (7,3) Endpoints of minor axis: (5,6) and (9      Log On


   



Question 191554This question is from textbook Blitzer College Algebra an early funcitons approach
: Find the standard form of the equation of each ellipse satisfying the given conditions; Endpoints of major axis:(7,9) and (7,3)
Endpoints of minor axis: (5,6) and (9,6)
This question is from textbook Blitzer College Algebra an early funcitons approach

Answer by Edwin McCravy(20059) About Me  (Show Source):
You can put this solution on YOUR website!

Plot those 4 points:



Connect them to show the major and minor axes
of the ellipse:



Sketch in the ellipse:



We can see that the ellipse has the standard form:

%28x-h%29%5E2%2Fb%5E2+%2B+%28y-k%29%5E2%2Fa%5E2+=+1

where 

1. (h,k) = the center 

2. a = the distance from the center to either end of the 
major axis.

3. b = the distance from the center to either end of the 
minor axis.

We can see from the graph that 

1. the center of the ellipse is (h,k) = (7,6)

2. a = 3

3. b = 2

So the equation 

%28x-h%29%5E2%2Fb%5E2+%2B+%28y-k%29%5E2%2Fa%5E2+=+1

becomes

%28x-7%29%5E2%2F2%5E2+%2B+%28y-6%29%5E2%2F3%5E2+=+1

or

%28x-7%29%5E2%2F4+%2B+%28y-6%29%5E2%2F9+=+1

Edwin