Independent vs. Dependent Math

y = 4x + 1

IV: ​ (a)  

DV: ​ (b)  

• x

• y

• 4

• 1

Which event is not a dependent event?

• Picking 2 students to be the line leader and the door holder from a group of 20 students

• Picking 2 marbles from a bag without replacing the first marble

• Picking 2 crayons from a box without putting any back

• Picking an earring, replacing it, then picking a 2nd earring

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

• dependent

• independent

What is the independent variable?

• Time spent studying

• Test score

The independent variable is ​ (a)  

The dependent variable is ​ (b)  

• t

• C

• 0.15

• $35.00

What is the dependent variable in the equation y = 3x - 2?

• y

• x

• -2

• 3x

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

Which is the dependent variable?

• x

• y

• -1/2

• 4

Which is the dependent variable?

• x

• y

• -1/2

• 4

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