Question

what is the constant of proportionality in dollars per mile?

Explanation:

Step1: Identify two points

Take two points from the graph, say \((100,50)\) and \((200,100)\).

Step2: Calculate the constant of proportionality

The formula for the constant of proportionality \(k\) (in a proportional relationship \(y = kx\)) is \(k=\frac{y}{x}\). Using the point \((100,50)\), \(k = \frac{50}{100}\).

Answer:

\(0.5\)