Independent and Dependent Variables in Tables and Graphs

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

• The output is:  s+3
• The output is:  s-1
• The output is:  s-3
• The output is: s ÷ 2 
  

What is the DEPENDENT variable?

• total cost

• weight

• 0.3

• there isn't one

Rolando’s backpack weighs 2.5 pounds when it is empty. The total weight in pounds, y, of Rolando’s backpack when it contains x pounds of books is represented by the equation

y = x + 2.5. Which table best represents this situation?

• A

• B

• C

• D

The table shows the relationship between d, the amount of money Elena has at the beginning of the day, and b, the amount of money she has after buying lunch. Which equation represents the relationship in the table?

• b = d - 3.75

• d = 2b

• d = b +1.25

• b = d + 3.75

The graph shows the number of points y, a player earns in a video game based on the number of diamonds the player collects, x. Which equation best represents the relationship between x and y?

• x = y + 75

• y = x + 75

• y = 75x

• x = 75y

The table below shows the relationship between x and y. What equation represents the same relationship?

• y = 4x

• y = x - 9

• y = ¹/4 x

• y = x + 9

What are the dependent quantities represented in this table?

• 0, 2, 4, 6, 8, 10, 12, 14, 16

• 1, 2, 3, 4, 5, 6, 7, 8

• 2, 3, 4, 5

• 6, 9, 12, 15

Your independent variable is graphed on which axis?

• x-axis

• y-axis

• origin

Which list shows the dependent quantities in the graph?

• 5, 10, 15, 20, 25, 30, 35

• 3, 6, 9, 12, 15, 18, 21

• 1, 2, 3, 4, 5, 6, 7

• 2, 4, 6, 8, 10, 12, 14