Question 861930
 x^2/4 + y^2/9 = 1
foci  are ± sqrt(5) from zero along the major axis x = 0
{{{drawing(300,300,   -10,10,-10,10,  arc(-0,0,4,6),
 grid(1),
circle(0, -sqrt(5),0.4),
circle(0, sqrt(5),0.4),
graph( 300, 300, -10,10,-10,10,0))}}}