Question

what is the constant of proportionality in grams per ounce?

Explanation:

Step1: Identify two points on the line

Let's take the points \((2,5)\) and \((4,10)\) from the graph.

Step2: Use the formula for the constant of proportionality \(k=\frac{y}{x}\)

For the point \((2,5)\), \(k = \frac{5}{2}=2.5\).
For the point \((4,10)\), \(k=\frac{10}{4} = 2.5\).

Answer:

\(2.5\)