What is the constant of proportionality for the relationship between the number of cups of flour and the number of batches of cookies?
A graph on a coordinate grid is shown.The x-axis is labeled 'Cups of Flour' and is between 0 and 18 with interval marks representing two units. The y-axis is labeled 'Batches of Cookies' and is between 0 and 8 with interval marks representing one unit. A line is drawn connecting the points:
· left-parenthesis 0 comma 0 right-parenthesis
· left-parenthesis 2 comma 1 right-parenthesis
· left-parenthesis 4 comma 2 right-parenthesis
· left-parenthesis 6 comma 3 right-parenthesis
· left-parenthesis 8 comma 4 right-parenthesis
· left-parenthesis 10 comma 5 right-parenthesis
· left-parenthesis 12 comma 6 right-parenthesis
· left-parenthesis 14 comma 7 right-parenthesis
· left-parenthesis 16 comma 8 right-parenthesis
A. 0.25
B. 0.5
C. 2
D. 4
B. 0.5
To find the constant of proportionality, we need to find the ratio of the change in the number of batches of cookies to the change in the number of cups of flour.
By looking at the graph, we can see that for every 2 cups of flour, the number of batches of cookies increases by 1.
Therefore, the constant of proportionality is 1 batch of cookies for every 2 cups of flour.
The correct answer is B. 0.5