Determine Independent and Dependent Variables

Which label best describes the independent quantities shown in the table?

• Number of tickets (t)

• Cost (c)

On a graph, which axis shows the dependent variable?

• x-axis

• y-axis

• neither

• it changes

On a graph, which axis shows the independent variable?

• x-axis

• y-axis

• neither

• it changes

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

• dependent

• independent

Sarah 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

Which of the variables is INDEPENDENT?

• s

• t

• the independent variable is distance
• the independent variable is d=25 t
• the dependent variable is time
• the dependent variable is distance

The dependent variable is:

• m = money

• p = number of pizzas delivered

The independent variable is:

• s = stickers earned

• p = papers completed

Ms. Shi is making a scrapbook. As she adds more photos, the scrapbook grows thicker.
p = the number of photos added
t = the thickness of the scrapbook

• t is the independent variable and p is the dependent variable

• p is the independent variable and t is the dependent variable

Which of the following equations match the table.

• x = 2y

• y = 2x

• y = x + 5

• x = y