Independent vs Dependent Variable Math

On a graph, which axis shows the independent variable?

• x-axis

• y-axis

Carey and Justin are raising money to purchase books for the library. The more money they raise, the more books they will be able to purchase for the library.

Which of the variables is dependent?

• amount of money raised

• number of books

The time spent working is the independent quantity.

• True

• False

Brandon graphed the cost of his cell phone bill as he continued to use minutes. What is the independent variable for the given situation?

• minutes used per month

• cost in dollars

• cost per minute

• Brandon's cell phone

Ramone wants to know: does the distance a person kicks a soccer ball affect how well they will do on their math test.  What is the dependent variable?

• How far they kick the soccer ball

• who the person is

• how well they do on the math test

• Type of soccer ball.

Angelina set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• Distance traveled by the ball

• Height of the ramp

• Mass of the ball

• Who set up the experiment (Ms. S, etc)

On a graph, which axis shows the independent variable?

• x-axis

• y-axis

• neither

• it changes

Maria is starting to babysit to earn extra money. She is charging $15 for each hour she babysits. What represents the independent variable?

• the total amount she charged for babysitting

• the rate she is paid per hour

• the number of hours she babysits

• the number of children she babysits

The total cost, t, for frozen yogurt depends on the weight, w, in ounces. If Freddy's frozen yogurt shop uses the equation t=0.34w+2 to determine the cost of frozen yogurt which represents the dependent variable in this situation?

• 0.34

• t

• 2

• w

What is the independent variable?

• Time spent studying

• Test score