Question 624452
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Hi
Note: Standard Form of an Equation of an Ellipse is {{{(x-h)^2/a^2 + (y-k)^2/b^2 = 1 }}} 
where Pt(h,k) is the center. (a variable positioned to correspond with major axis)
 a and b  are the respective vertices distances from center
Write the equation of the ellipse with the given characteristics and center at (0,0).
 Vertex: (4,0)
 Co-Vertex: (0,2)
{{{(x-0)^2/4^2 + (y-0)^2/2^2 = 1 }}} 
{{{x^2/16 + y^2/4 = 1 }}}