Math @Reiny

Write the standard form equation for the following Ellipse. Use the information given below.

Foci: (0,0) and (4,0)
Major Axis of length 8

asked by Lucy
  1. This must be re your previous post

    from above: centre is (2,0)
    c is from centre to focus or c = 2
    2a = 8
    a = 4
    you should know that for a horizontal ellipse,
    a^2 = b^2 + c^2
    16 = b^2 + 4
    b^2 = 12

    (x-2)^2 /16 + y^2 /12 = 1

    posted by Reiny

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