Exploring Proportional Relationships and Equations

What is the value of y when x is 2 in the given relationship?

• 16

• 8

• 4

• 2

What is the constant ratio between y and x in the given relationship?

• 5

• 2

• 3

• 4

How can the relationship between y and x be expressed as an equation?

• y = x - 4

• y = 4x

• y = x + 4

• y = x/4

What is the constant of proportionality in the given relationship?

• 5

• 4

• 3

• 2

How is the constant of proportionality sometimes described?

• Rate of change

• Gradient

• Slope

• Intercept

In the second example, what is the unit of x?

• Minutes

• Hours

• Meters

• Seconds

In the second example, what is the unit of y?

• Meters

• Seconds

• Minutes

• Hours

What is the constant ratio between y and x in the second example?

• 6

• 8

• 5

• 7

What is the general form of a proportional relationship?

• y = x/k

• y = x + k

• y = k - x

• y = kx

In the first example, what is the value of k?

• 2

• 3

• 4

• 5