How to Identify the Independent and Dependent in a Function

What is the dependent variable in the table?

• total amount earned

• total number of hours

• $9 per hour

• the number of hours

A phone company charges a base rate of $40 a month for service. The user is charged $0.20 a minute for every minute used. The total amount charge to the customer, p, for any number of minutes, m, can be represented by the function
p = .2m + 40.
What is the dependent variable?

• The # of minutes used

• The base rate of $40

• The total amount charged to the customer

• The $0.20 per minute

In the equation y = 2x - 4, what is the dependent variable?

• 2x

• x

• -4

• y

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

• Number of tickets (t)

• Cost (c)

Which is the dependent variable?

• x

• y

• -1/2

• 4

What is the dependent variable on the graph?

• Time (minutes)

• Number of Sit-ups

Which is the dependent variable?

• x

• y

• -1/2

• 4

What is the independent variable on the graph?

• Number of Hours (h)

• Cost (c)

Name the DEPENDENT variable from the table below.

• minutes

• bubbles

• there is not one

• distance

• time

What is the dependent variable in the graph?

• the total cost of the tickets

• the cost of a ticket

• the number of tickets

• the total number of tickets