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

Constant of porportionality is 4

Step-by-step explanation:

Directly proportional

y = kx

For x = 2, y = 8

8 = 2(k)

Divide both sides by 2

4 = k

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2