Chapter 11.6, Problem 28PPE

To determine

To solve the equation represents a direct variation or an inverse variation $\$1.79/lb$

Answer to Problem 28PPE

The reason is mention on the last of expression

Explanation of Solution

Given:

Given equation

  $\$1.79/lb$

Calculation:

In order to solve an equation $\$1.79/lb$ ,

  $\begin{array}{l}\$1.79/lb\\ as\$we\text{}cansayy,1.79wecansayk,andlbasx\\ \end{array}$

as we know that

From the concept of direct variation $y\propto x$ or $y=kx$

$ represents $y$ , l b represents $x$ and $1.79$ represents the constant of variation

So above equation represents direct variation

Hence proved.

Thus, the solution is correct.