Question 726869
The equation 5x^2+4y^2=180 is a ellipse but why?
5x^2+4y^2=180
divide by 180
x^2/36+y^2/45=1
This is an equation of an ellipse with vertical major axis and center at (0,0)
Standard form of equation for an ellipse with vertical major axis: {{{(x-h)^2/b^2+(y-k)^2/a^2=1}}}, a>b, (h,k)=(x,y) coordinates of the center