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

1 answer

B. 0.5