Independent and Dependent Variables

Savannah pays $5 a month, m, for her music club subscription.

m= represents # of months

s= total costs of subscription

• The independent variable is "s"

• The dependent variable is "m"

• The independent variable is "5m"

• The independent variable is "m"

When Jane exercises on an elliptical machine, her initial heart rate is 90 beats per minute. She warms up at this rate for 5 minutes. Over the next 5 minutes, she gradually increases to 150 beats per minute. She maintains that rate for 15 minutes before gradually decreasing back to her original heart rate at the end of her 30-minute workout. The independent variable in this scenario is __________

What is the independent variable in the graph?

• the cost of a topping

• the total cost of the pizza

• the number of toppings

• the number of pizzas

What is the dependent variable in the table?

• the students' height

• the students' shoe size

• the students' name

• the total cost of the shoes

What is the independent variable in the equation?

• 30 minutes

• the number of days

• the minutes practiced

• total number of days

What is the dependent variable in the table?

• total amount earned

• total number of hours

• $9 per hour

• the number of hours

What is the dependent variable in the graph?

• the cost of the tickets

• the cost of one ticket

• the number of tickets

• the total number of tickets

Carter drives his moped at 25 miles per hour.
This can be represented by the equation m = 25h.

Which statement is correct?

• the number of hours driving is dependent on the miles traveled

• as the number of hours increases, the total miles decreases

• as the number of miles increases, the number of hours decreases

• the miles traveled are dependent on the number of hours

Which statement is correct?

• the water drains faster the longer the pump works

• as the number of hours increases, the gallons of water increase

• the gallons of water are dependent on the number of hours it pumps

• the number of hours it pumps is dependent on the gallons of water

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

• Number of tickets (t)

• Cost (c)