SOLUTION: plot x^2+4.y^2-4.x-8.y+4=0

Question 44641: plot x^2+4.y^2-4.x-8.y+4=0
Answer by adamchapman(301) (Show Source): You can put this solution on YOUR website!

Rearrange to give a quadratic equation in terms of y:

Now solve the quadratic using ,
where

This should give

has two equal roots , so the quadratic solver for y becomes:

There are two existing solutions for y:
and .
I have plotted both of the lines below for you.

I hope this helps.
P.S. I am trying to start up my own homework help website. I would be extremely grateful if you would e-mail me some feedback on the help you received to adam.chapman@student.manchester.ac.uk
Adam

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