Question 1026645
{{{9x^2+49y^2=441}}} <==> {{{x^2/49 + y^2/9 = 1}}}

The major axis is along the x-axis, while the minor axis is along the y-axis.

The vertices are (7,0) and (-7,0), while the co-vertices are (0,3) and (0,-3).

For an ellipse, {{{b^2+c^2 = a^2}}}.

==> {{{9 + c^2 = 49}}} ==> {{{c^2 = 40}}}, or {{{c = 2sqrt(10)}}}.

==> Foci are ({{{-2sqrt(10)}}},0) and ({{{2sqrt(10)}}},0).

Domain is the closed interval [-7,7], while the range is the closed interval [-3,3].