Independent and Dependent Variable

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 receptionm = the amount of money Josie's quartet earnsWhich of the variables is independent? (a)  

• 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 babysitsm = the amount of money Dalton earnsWhich of the variables is dependent? (a)  

• h

• m

• The dependent variable is total cost
• The dependent variable is weight
• The independent variable is total cost
• The independent variable is cost of a package

Which is the dependent variable?

• x

• y

• -1/2

• 4

The x-axis is also called your ​ ​ (a)   variable and your ​ (b)   .​

• independent

• dependent

• input

• output

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

• 2x

• x

• -4

• y

Which is the dependent variable?

• x

• y

• -1/2

• 4

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

Kira designs websites. She can create three different websites each week. Kira wants to create an equation that will give her the total number of websites she can design given the number of weeks she works.What is the independent vairble (a)  

• the number of websites she makes

• the number of weeks

• the design of the website

• there isn't one