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    Can someone explain to me:

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    I've looked at the mark scheme, and it says the correct gradient is 65+14h+h^2, and i have gotten as far as having h^3 + 14h^2 +65h +100 (after subbing in x=(5+h) and expanding), so what is this "correct formula for gradient" which I've forgotten? Thanks
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    Use the forumla y2-y1 ÷ X2-X1 to get the gradient and then you will have your answer

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    man, im so dumb, hehe. Thankyouuuuu
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    The 100 should be 125 btw in your y value for (5+h) You will be finding the gradient of the chord just incase you wanted to think of it on a graph

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Updated: May 16, 2013
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