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Ah; I'd interpreted inversely proportional to mean "y = -mx" rather than "y = m / x", forgetting my GCSE maths terms :S. Thanks for the pointer.
by johnlbevan2 10y ago
Ah; I'd interpreted inversely proportional to mean "y = -mx" rather than "y = m / x", forgetting my GCSE maths terms :S. Thanks for the pointer.