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# FP3 ellipse question watch

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1. Hi really need help with part ii of this question, I can't simplify down once i reararrange the equations for x and y

2. (Original post by Minzky)
Hi really need help with part ii of this question, I can't simplify down once i reararrange the equations for x and y

What have you done so far and whereabouts are you stuck?

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3. I rearranged for x and y but it wont simplify as far as i can see
4. bump
5. (Original post by Minzky)
I rearranged for x and y but it wont simplify as far as i can see
6. (Original post by Minzky)
You haven't really done much - you've equated the two equations, rearranged for x and then rearranged for y. The problem with this is you haven't got any coordinates at all, because you haven't eliminated the x or the y.

Try taking one of your equations and rearranging for x or y, substituting it into the second and seeing what you can do from there.

I tried it and got some neat answers, so let me know how you get on!

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Updated: July 18, 2016
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