Question

In the table below, y is directly proportional to x. Determine the constant of proportionality. Explain how you found your answer.

x = 2, 4, 6.25
y = 8, 26, 25

Answer 1

Constant of porportionality is 4

Explanation:

Directly proportional

y = kx

For x = 2, y = 8

8 = 2(k)

Divide both sides by 2

4 = k