## College Algebra (6th Edition)

Solving Variation Problems (see p. 424) 1. $\ \$Write an equation that models the given English statement. 2. $\ \$Substitute the given pair of values into the equation in step 1 and find the value of k, the constant of variation. 3. $\ \$Substitute the value of k into the equation in step 1. 4. $\ \$Use the equation from step 3 to answer the problem's question. ----------- 1. M varies directly as E, $\qquad M=kE$ 2. $60=k(360) \qquad /\div 360$ $\displaystyle \frac{60}{360}=k$ $k=\displaystyle \frac{1}{6}$ 3. $M=\displaystyle \frac{1}{6}E$ 4. $M=\displaystyle \frac{1}{6}(186)=31$ lb