Question 452453
what is the equation of a parabola that opens downward and has an axis of symmetry x=-1
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y = -(x-1)^2
{{{graph(400,300,-10,10,-10,10,-(x-1)^2)}}}
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and from a graph how do you find the equation for an eclipse?
Find the center at (h,k)
Find the length of half of the major axis: that's "a".
Find the length of half of the minor axis: that's "b".
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Write the equation:
(x-h)^2/a^2 + (y-k)^2/b^2 = 1
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Cheers,
Stan H.