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

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

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

Sherry can buy 4 pounds of oranges for $18.  Write the equation to represent the cost, y, for x oranges.

• y = 4.5x
• y = 72x
• y = 2/9 x
• y = 4x

Which graph is non-proportional?

• A
• B
• C
• D

What makes a graph proportional?

• Straight Line
• The line goes through (0,0)
• Curvy line
• Straight line and passes through (0,0)