Try another version of this question Get help: Box 1: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Write the equation of the ellipse that has a center at `(1, -3)`, a focus at `(5, -3)`, and a vertex at `(7, -3)`.
Be sure your variables match those in the question `(x-1)^2/36 + (y+3)^2/20 = 1`