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Find values of $K$ and $a$ correct to 2 significant figures.
Mathematics 9709 · AS & A Level · Numerical solution of equations
Numerical solution of equations — practice question
The variables $x$ and $y$ are related by $y = \frac{K}{a^{2x}}$, with $K$ and $a$ as constants. The plot of $\ln y$ against $x$ is a straight line that goes through the points $(0.6, 1.81)$ and $(1.4, 1.39)$, as shown in the diagram.