Question 1076024
The major axis is the longer and the square of a, its length, goes under the appropriate variable.  Here, the major axis is along the y-axis from -3 to +3.
a=3 and a^2=9. This will be a vertical ellipse on its long axis and centered at the origin.
The minor axis is along the x-axis from -2 to 2, so b is 2 and b^2=4
x^2/4+y^2/9=1
or 9x^2+4y^2=36
{{{graph(300,300,-5,5,-5,5,sqrt(9-(2.25x^2)),-sqrt(9-(2.25x^2)))}}}