the graph shows the amount of money nationwide shipping company pays its drivers for miles driven at work…

Explanation:

Step1: Select a point on the graph

Let's take the point (100, 60). Here, 100 is the number of miles driven and 60 is the pay in dollars.

Step2: Calculate the constant of proportionality

The constant of proportionality $k$ (dollars per mile) is given by the formula $k=\frac{y}{x}$, where $y$ is the pay and $x$ is the number of miles. Substituting $x = 100$ and $y=60$ into the formula, we get $k=\frac{60}{100}=0.6$.

Answer:

$0.6$