Independent and Dependent Variables in Real World Math

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

A ​ ​ ​ (a)   variable changes in response to another variable.

• dependent

• independent

An ​ ​ (a)   variable causes the ​ (b)   variable to change..

• independent

• dependent

What is the independent variable in the statement?

• Independent variable: p

• Independent variable: c

What is the dependent variable in the statement? The profit, p, and the number of candy bars sold, c

• Dependent variable: p

• Dependent variable: c

What is the dependent variable in the statement?

The number of minutes spent talking on the phone, m, and the amount of a cell phone bill, a

• Dependent variable: m

• Dependent variable: a

What is the independent variable in the statement? The number of minutes spent talking on the phone, m, and the amount of a cell phone bill, a

• Independent variable: m

• Independent variable: a

What is the independent variable in the statement?

• Independent variable: d

• Independent variable: h

What is the dependent variable in the statement?

Wait time, w, and number of people in line to get on a ride, p

• Dependent variable: w

• Dependent variable: p