Question 1026562: Find the equation of the ellipse with foci (-4,2) and (4,2). The length of the major axis is ten units Answer by FrankM(1040) (Show Source):
You can put this solution on YOUR website! See my notes below -
Plot 2 foci. Draw Major Axis. (green line) Position 1/2 major axis at foci and on minor axis(purple line. This forms a triangle base 4, hypotenuse 5, so height is 3.
The elipse has center (0,2), thus the y-2, and plain x up top. The 2 semi-axis are 3 and 5, giving denominators of 9 and 25.
