## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

To find the rate of change of the retail loss due to theft, we use the equation for slope. Letting 2008 be time equals zero, we find: $$\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{16.2-15.9}{3-0} \\ m=.1$$