Proportional Relationships

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.
• The table is proportional and the unit rate is 1/13
• The table is proportional and the unit rate is 13.
• The table is not proportional because it doesn't pass through the origin.

Using the graph above, determine the constant of proportionality.

• k = 0
• k = 1
• k = 3
• k = 6

Using the table above, determine which statement is correct.

• The table is proportional and the unit rate is 100.
• The table is not proportional because the unit rate is not constant.
• The table is not proportional because it doesn't pass through the origin.
• The table is proportional and the unit rate is 0.01.

Determine which equation does NOT represent a proportional relationship.

• y = -2x
• y = 1/2 x
• y = 3x
• y = 5x - 7

Using the table above, determine the equation of the line.

• y = 5x
• y = 10x
• y = 1/5 x
• y = 1/10 x

The cost, c, of potato salad by its weight in pounds, p, at a deli is given in the table above.  Which equation best models this data.

• c = .29p
• c = 3.5p
• p = .29c
• p = 3.5c

The table shows the weight in pounds of objects on earth compared to objects on the moon.  If an object on earth weighs 42 lbs, what is its weight on the moon?

• 7 lbs
• 12 lbs
• 84 lbs
• 252 lbs

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.
• The graph is proportional because it is linear and passes through the origin.
• The graph is not proportional because it does not pass through the origin.
• The graph is not proportional because it is not linear and it does not pass through the origin.

What is the constant of proportionality based on the table above?

• 1/75
• 75
• 1
• 0

Jacob mixed 8 cups of flour with 2 cups of water to make pizza dough.  To represent the relationship between the number of cups of flour, f, and the number of cups of water, w, needed to make the same pizza dough, Jake wrote the equation
f = ____ w
What should be placed in the blank?

• 1/4
• 8
• 2
• 4