Exploring the Equation of Tables with Constant Proportionality

What is the formula for the constant of proportionality?

• X over Y

• Y over X

• X times Y

• Y minus X

In Example 1, what is the value of K when Y is 75 and X is 5?

• 20

• 25

• 15

• 10

What is the equation derived from Example 1?

• y = 20x

• y = 10x

• y = 15x

• y = 25x

In Example 2, what is the value of K when Y is 21 and X is 7?

• 2

• 5

• 4

• 3

What is the equation derived from Example 2?

• y = 5x

• y = 4x

• y = 2x

• y = 3x

In Example 3, what is the value of K when Y is 64 and X is 2?

• 33

• 31

• 32

• 30

What is the equation derived from Example 3?

• y = 32x

• y = 33x

• y = 30x

• y = 31x

In Example 4, what is the value of K when Y is 93 and X is 3?

• 33

• 30

• 31

• 32

What is the equation derived from Example 4?

• y = 30x

• y = 31x

• y = 32x

• y = 33x

What is the general form of the equation using the constant of proportionality?

• y = K + x

• y = K - x

• y = Kx

• y = K/x