Dependent and Independent Variables

Carey and Justin are raising money to purchase books for their school's library. The more money they raise, the more books they will be able to purchase for the library.
m = the amount of money Carey and Justin raise
b = the number of books Carey and Justin will be able to purchase
Which of the variables is dependent?

• m

• b

What is the algebraic equation for this table?

• y = x + 3

• y = 3x

• y = x ÷ 3

• y = x - 3

What is the algebraic equation for this table?

• y = 480x

• x = y/480

• x + 480 = y

• 480 - x = y

Nancy can type 50 words per minute. Look at the table below to write an equation that matches the data.

• m=50 + w

• w= 50m

• w= 50 + m

• m= 50 - w

Look at the table below. Write an equation to match the pattern between m, minutes and bubbles blown, b.

• b = 12(m)

• b= m +12

• b = m ÷ 12

• none of these

What is the missing value of the table based on patterns?

• 25

• 50

• 75

• 27

A ​ ​ ​ (a)   variable changes in response to another variable.

• dependent

• independent

An ​ ​ (a)   variable causes the ​ (b)   variable to change..

• independent

• dependent

What is the independent variable in the statement?

The number of pages read, p, and the time spent reading, t

• Independent variable: p

• Independent variable: t

What is the dependent variable in the statement? The profit, p, and the number of candy bars sold, c

• Dependent variable: p

• Dependent variable: c