Dependent and Independent Variables Word Problems

You are selling cupcakes for $3. If you sell 5 cupcakes you have $18.

What are the independent and dependent variables in the scenario?

• Independent: Money made Dependent: cupcakes

• Independent: cupcakes Dependent: money made

• Independent: $18 Dependent: 5 cupcakes

• Independent: 5 cupcakes Dependent: $18

The population of fish in a pond is decreasing at a rate of 2 fish per month. After 3 months there are 50 fish left.

What are the independent and dependent variables for this scenario?

• Independent: 3 months Dependent: 50 fish

• Independent: 50 fish Dependent: 3 months

• Independent: months Dependent: fish

• Independent: fish Dependent: months

Violet has an Internet business selling paint sets.  After an initial website fee each week, she makes a profit of $0.75 on each set she sells.  If she sells 8 sets and she makes $2.25; write an equation in point-slope form representing her weekly possible earnings.

• y - 2.25 = 0.75(x - 8)

• y - 8 = 0.75(x - 2.25)

• y - 8 = 2.25(x - 0.75)

• y - 0.75 = 2.25(x - 8)

A(n) _____________ variable depends on or is changed by another variable.

• dependent

• independent

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

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

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

Name the INDEPENDENT variable from the table below.

• words

• minutes

In the table, Bubbles is the ______________.

• independent variable

• dependent variable