Dependent Independent Variable on the Graph, Equation

The volume of a sphere is given by the formula V=4πr³, where V is the volume and r is the radius.  What is the dependent variable in this situation?

• V

• 4

• r

• π

Samantha 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
The number of treats she will bring can be found using the equation 
t=3s+5
Which of the variables is independent?

• s

• t

• 3

• 5

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

Daisy is training for a marathon.  The amount of time spent running depends on how far she runs.  Which statement is true

• The dependent variable is the amount of time spent running, the independent variable is the miles run. 

• The dependent variable is miles run, the independent variable is the time spent running.

• The independent variable is her running shoes and the dependent variable is the flavor of gatorade she drinks

• The dependent variable is the weather and the independent variable is the time of day. 

Select the rule/equation that best represent the table.

• y = 2x + 3

• y = x + 6

• y = -3x + 4

• y = 3x

Will practices at a batting cage. The table shows the total cost based on the number of tokens purchased. Which of the following is the independent variable in this situation?

• number of tokens

• total cost

• $7.00

In the table, the bubble machine can produce 12 giant bubbles in one minute. Bubbles is the ______________. (Hint: What is the input value and what is the output value?)

• independent variable

• dependent variable

On a graph, which axis typically shows the independent variable?

• x-axis

• y-axis

• neither

On a graph, which axis typically shows the dependent variable?

• x-axis

• y-axis

• neither

What is the algebraic equation for this table?

• y = x + 3

• y = 3x

• y = x ÷ 3

• y = x - 3