Identifying Dependent and Independent Variables

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

Which of the following is true?

• 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 variable is dependent?

Sarah is participating in a walkathon to raise money for local literacy programs. The amount of money Sarah will raise depends on the distance she walks.

m = the amount of money Sarah will raise
d = the distance Sarah walks

Which of the variables is dependent?

• m

• d

The older John gets, the taller he is.

What is the INDEPENDENT VARIABLE?

• John's age

• John's height

What is the DEPENDENT VARIABLE?

• John's age

• John's height

The more gallons of milk I have, the more glasses of milk I can drink.

What is the INDEPENDENT VARIABLE?

• gallons of milk

• glasses of milk I drink

What is the DEPENDENT VARIABLE?

• gallons of milk

• glasses of milk I drink

What is the INDEPENDENT VARIABLE?

• number of seats

• number of tickets sold