Question

The graph shows Sam's earnings. What is the constant

of proportionality between Sam's earnings and the
number of hours he worked?

Answer 1

8

Explanation:

Constant of proportionality, k = y/x

y = earnings ($)

x = time (h)

Any point on the line can be used to determine the constant of proportionality. Let's use, (1, 8)

Constant of proportionality, k = y/x = 8/1

k = 8