Independent and Dependent Variable Math Function

The time spent working is the independent quantity.

• True

• False

Brandon graphed the cost of his cell phone bill as he continued to use minutes. What is the independent variable for the given situation?

• minutes used per month

• cost in dollars

• cost per minute

• Brandon's cell phone

Which ordered pair makes the equation false?

• (6, 5)

• (0, 4)

• (10, 8)

• (15, 10)

What best describes the unit rate of the linear function shown?

• 20 gallons of water per load of laundry

• 25 gallons of water per load of laundry

• 40 gallons of water per load of laundry

• 50 gallons of water per load of laundry

the "input" value of a function, does not depend on that of another

• Independent variable

• Origin

• Negative slope

• Undefined Slope

The independent variable is ​ (a)  

The dependent variable is ​ (b)  

• t

• C

• 0.15

• $35.00

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 is the dependent variable?

• x

• y

• -1/2

• 4

Elizabeth hired a cleaning service to clean her house. To find C, the total cost of cleaning her house, she used the following equation.

C = 7.5x + 25

What is the dependent variable for the equation?

• 7.25

• 25

• C

• x