Independent and Dependent Variables

Which of the following equations match the table.

• x = 2y

• y = 2x

• y = x + 5

• x = y

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 = the number of students

• t = the number of treats

One chicken is injected with a growth hormone while another chicken is not injected with a growth hormone. After one year, both chickens are weighed. What is the dependent variable?

• If the chicken was injected with a growth hormone or not

• The weight of the chicken

• The type of chicken

One chicken is injected with a growth hormone while another chicken is not injected with a growth hormone. After one year, both chickens are weighed. What is the independent variable?

• If a chicken was injected with a growth hormone or not

• The weight of the chicken

• The type of chicken

Identify the independent variable

The number of hours, h, worked and the amount of money, m, earned

• hours, h

• money, m

Identify the independent variable

The number of hamburgers, h, sold and the dollar amount of sales, s taken in

• h

• s

The number of oranges in a bag and the cost of the bag of oranges are related. What is the independent variable in this relationship?

• The number of oranges in the bag

• The cost of the bag

Identify the independent variable

The pages p, in a book and the weight, w, of the book

• p

• w

What makes up an ordered pair?

• Two random numbers

• An x-value and a y-value

• Two pears

• Two lines

Sam wanted to know if the color of the chair you sat in when taking a test affected your test grade. What is the independent variable.

• Color or chair

• Grade on test

• Age of students