Question

X 2 4 6 8

Y 10 20 30 40
the table shows a proportional relationship between x and y. what is the unit rate of y per x


A 1

B 2

C 4

D 5

Answer 1

The correct answer is D, 5

Explanation:

If the table represents a proportional relationship between our values x and y, we can find our function.

From our constants in x, the increase is a product of x by 5 to result in y's value. Therefore, the constant unit rate of y per x is 5.