Mathematics (AS & A Level) · Oct / Nov 2019 · Paper 22 · Question 3
9709
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ln x ln y O 0.22, 3.96 1.32, 2.43 The variables x and y satisfy the equation y = kxa, where k and a are constants. The graph of ln y against ln x is a straight line passing through the points 0.22, 3.96 and 1.32, 2.43 , as shown in the diagram. Find the values of k and a correct to 3 significant figures. [5]
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