Dependent and Independent Variables

Grace is bringing treats to her Algebra 1 class on her birthday. The number of treats she brings is based on the number of students in her class.

Which of the variables is independent?

• number of students

• number of treats

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

• dependent

• independent

What makes up an ordered pair?

• Two random numbers

• An x-value and a y-value

• Two pears

• Two lines

Mr. Hays is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball

• Force acting on the ball

• Height that the ball bounces

• Height from which the ball is dropped

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

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

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

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

• dependent

• independent