Independent and Dependent Variables

John measures the length of each side of a square. He uses that value to calculate the perimeter.

IV: ​ ​ ​ (a)  

DV: ​ (b)  

• length of each side

• perimeter

• square

• cannot be determined

y = 4x + 1

IV: ​ (a)  

DV: ​ (b)  

• x

• y

• 4

• 1

Identify the independent and dependent variables.

• independent variable: d dependent variable: s

• independent variable: s dependent variable: d

The table shows the cost of renting a bicycle. Which set of ordered pairs could be used to graph the relationship shown in the table?

• (2, 10), (3,15), (4,20), (5,25)

• (2,3), ((4,5), (10,15), (20,25)

• (10,2), (15,3), (20,4), (25,20)

• (3,2), (5,4), (15,10), (25,20)

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

• 2x

• x

• -4

• y

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

• y

• x

• -2

• 3x

Which is the dependent variable?

• x

• y

• -1/2

• 4

The dependent variable is:

• x

• 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