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You have some laboratory data which has the functional form y = e*^{-x/t}. What could you plot as a function of x to make the data linear?

y = e^{-x/t}

If we take the natural log of both sides we have the following equation.

*ln*(y) = -x/t

Therefore, a plot of *ln*(y) versus x will give a straight line with slope -1/t.