Functions (linear)

Another way of saying one quarter

• 35%
• 25%
• 65%
• 90%

A linear equation is defined by having a...

• exponent greater than one

• variable rate of change

• constant rate of change

• positive slope

Which of the following rates of change represents the graph shown?

• 2 boys for every 1 girl
• 0.5 boys for every 1 girl
• 6 boys for every 1 girl
• 3 boys for every 1 girl

For the equation: k=y/x, the variable k is called the...

• Constant, and it represents the constant rate of change or constant ratio between x and y

• Coefficient, and it represents the constant rate of change or constant ratio between x and y

• x factor, and it represents the constant rate of change or constant ratio between x and y

• y factor, and it represents the constant rate of change or constant ratio between x and y

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours?

• $394.00

• $443.25

• $472.80

• $512.20

At a local fruit stand, Luisa spends $3.96 for 2 pounds of strawberries. How much can she expect to pay for 4 pounds of strawberries?

• $5.92

• $6.92

• $8.92

• $7.92

What does k represent in the equation y = kx?

• constant rate of change
• constant of proportionality
• the equation
• x/y

What is the type of association?

• Negative 
• no association
• positive 

What is the constant of proportionality for the table above?

• X 2

• X 1/2

• X 3

• None of the above

If the constant of proportionality is 10, which of the following is the correct proportional equation?

• 10 = kx

• 10 = k

• y = 10k

• y = 10x