Question 412548
  <pre><font size = 3 color = "indigo"><b>
Hi
Ellipse with foci at (4, 2) and (10, 2) and co-vertices at (7, 0) and (7, 4) 

 {{{(x-7)^2/13 + (y-2)^2/4 = 1}}}

{{{drawing(300,300,  -1,15,-1,15, arc(7,2,7.2,4),
 grid(1),
circle(4, 2,0.3),
circle(10, 2,0.3),
circle(7, 2,0.3),
graph( 300, 300, -1,15,-1,15))}}}