SOLUTION: i need help with writing equations for parabolas and eclipses
the question i have in this packet im doing is:
what is the equation of a parabola that opens downward and has an
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Question 452453: i need help with writing equations for parabolas and eclipses
the question i have in this packet im doing is:
what is the equation of a parabola that opens downward and has an axis of symmetry x=-1
and from a graph how do you find the equation for an eclipse?
thank so much
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
what is the equation of a parabola that opens downward and has an axis of symmetry x=-1
--------
y = -(x-1)^2
-
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".
---
Write the equation:
(x-h)^2/a^2 + (y-k)^2/b^2 = 1
===============================
Cheers,
Stan H.
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