Independent Dependent Variable Math

Sarah is participating in a walkathon to raise money for local literacy programs. The amount of money Sarah will raise depends on the distance she walks.
m = the amount of money Sarah will raise
d = the distance Sarah walks
The following equation can be used to find the amount of money she will raise. 
m=75d
Which of the variables is dependent?

• m

• d

• 75

• Sarah

You are doing chores to earn your allowance. For each chore you do, you earn $3. In the equation below, c is the number of chores you do, and d is the number of dollars you earn. The relationship between these two variables can be expressed by the following equation: d=3c Which of the following is the independent variable?

• The number of chores you do

• The amount of dollars you earn

You are walking directly away from your house. You are 5 miles away from your house when you start walking, so you can determine your distance from your house by adding 5 to the number of miles you have walked. In the equation below, x represents the number of miles you have walked, and y represents your distance from home in miles. The relationship between these two variables can be expressed by the following equation: y=x+5 Which is the independent variable?

• Your distance from home

• number of miles you walked

Name the INDEPENDENT variable from the table below.

• words

• minutes

In the table, Bubbles is the ______________.

• independent variable

• dependent variable

The dependent variable is:

• m = money

• A = A on report card

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

• Number of tickets (t)

• Cost (c)

• the independent variable is distance
• the independent variable is d=25 t
• the dependent variable is time
• the dependent variable is distance

The independent quantities are represented by these values: 0.15, 0.25, 0.5, and 1.0                         

• True

• False

The time spent working causes the amount earned.

• True

• False