Question

interpreting the function given on a graph
primer needed (gallons)
area to paint (square feet)
interpret the graph to determine the statement the manager at a building supply store can use to help a customer determine how much primer to purchase. each gallon of primer will cover a of square feet.
minimum
maximum
multiple

Explanation:

Step1: Analyze the graph's points

Looking at the graph, when primer needed (y) is 1, area (x) is up to 200. When y=2, x up to 400, etc. So the rate is $\frac{\text{Area}}{\text{Primer}}=\frac{200}{1}=200$, $\frac{400}{2}=200$, etc.

Step2: Determine the type of coverage

The graph shows the maximum area each gallon can cover (since the closed dots are at the upper limit of each interval). So each gallon covers a maximum of 200 square feet.

Answer:

maximum, 200