Dependent/Independent

Sarah is bringing treats to her elementary school class on her birthday. The number of treats she brings in is based on the number of students in her class.
t = the number of treats
s = the number of students
Which of the variables is independent?

• s

• t

Carey and Justin are raising money to purchase books for their school's library. The more money they raise, the more books they will be able to purchase for the library.
m = the amount of money Carey and Justin raise
b = the number of books Carey and Justin will be able to purchase
Which of the variables is dependent?

• m

• b

In order to earn extra money on the weekends, Josie's string quartet performs at wedding receptions. The longer the reception, the more money they earn.
r = the length of the reception
m = the amount of money Josie's quartet earns
Which of the variables is independent?

• r

• m

In order to earn extra spending money, Dalton babysits children after school. The greater the number of hours he babysits, the more money he earns.
h = the number of hours Dalton babysits
m = the amount of money Dalton earns
Which of the variables is dependent?

• h

• m

In the equation y = 2x - 4, what is the dependent variable?

• 2x

• x

• -4

• y

Elizabeth hired a cleaning service to clean her house. To find C, the total cost of cleaning her house, she used the following equation.

C = 7.5x + 25

What is the dependent variable for the equation?

• 7.25

• 25

• C

• x

Which is the dependent variable?

• x

• y

• -1/2

• 4

The dependent variable is:

• x

• y

Which is the dependent variable?

• x

• y

• -1/2

• 4

What is the dependent variable in the equation y = 3x - 2?

• y

• x

• -2

• 3x