Question 1158928: Write the equation of each ellipse or hyperbola.
13. A vertical ellipse has a focus (−6,1). It has a co-vertex of (-10, -7)
The correct answer is:
However, I do not know how to do the work to get the answer
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website!
A vertical ellipse has a focus ( , ). It has a co-vertex of ( ,  )
formula for ellipse a  is:
co-vertex ( , ) and ( ,)
if one co-vertex of (, ), then =>
 , 
focus is at ( , ) and (, )
if one focus (,) , then
 ,
 , ->since
the other one focus is at
(, )=(, )
The center is half way between, at (, )
since
and =>  => ->
other co-vertex is at (,)=( ,)=( ,)
find 
and your equation is:
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