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Quadratics Equation

Asked Apr 10, 2012, 04:42 PM — 3 Answers
a) Find the values of k and c in the equation y=c+kx-x^2
b) Find the co-ordinates of the highest point of the graph.

Please help, thank you!

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rpray2007's Avatar
rpray2007 Posts: 320, Reputation: 110
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#2

Apr 10, 2012, 04:59 PM
Would be glad to help and if you tell us where you are stuck, we're more than happy to help.

Basically, you have to use your standard quadratic formula



In your case, is the same as and is

Good luck.
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catfish-'s Avatar
catfish- Posts: 3, Reputation: 1
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#3

Apr 10, 2012, 05:23 PM
Thank you for your help, I don't know how to use the quadratic formula to solve this. Will the answer be numbers or an expression?
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rpray2007's Avatar
rpray2007 Posts: 320, Reputation: 110
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#4

Apr 11, 2012, 10:27 PM
It will be an expression as you do not have any number for and .
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