A. The constant of proportionality is
B. Write an equation that represents this graph. Response area
C. This is a proportional relationship because the y-intercept is Response area
A. The constant of proportionality is the slope of the graph, which is equal to the change in y divided by the change in x.
B. An equation that represents this proportional relationship is y = mx, where m is the constant of proportionality.
C. This is a proportional relationship because the y-intercept is 0, indicating that the relationship passes through the origin.