Kaela traced 4 circles, each with a different diameter, on a piece of paper. For each circle, she laid a piece of string along the outline and then measured the length of the string. Her results are shown in the table below.
Circle Measurements
Diameter
Length
of String
2 in
6.28 in
5 in
15.70 in
8 in
25.12 in
11 in
34.54 in
Kaela wrote an equation, y = kx, to model the relationship between the circumference, y, and the diameter, x, of the circle. Which of
the following statements correctly describe what k represents in this equation?