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#1 2006-02-22 05:53:25

rp_
Novice

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solve the equation

if i have the ellipse x/16 +y/9 = 1

If x = 1.8 how do i fin y
could you please show your steps

thanks.

#2 2006-02-22 08:05:10

irspow
Power Member

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Re: solve the equation

Solve for y first;

1 = x²/16 + y²/9;

9(1 - x²/16) = y²;

y = √(9(1 - x²/16);

y = (3/4)√(16 - x²);

if x = 1.8;

y = .75(√12.76);

y ≈  2.68

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