Unit 2 Review

It took Julius 1/3 of an hour to ride his bike 2 & 3/4 of a mile. How many miles per hour can he ride his bike?

• 3 & 1/2
• 6 & 3/4
• 8 & 1/4
• 16 & 1/2

A brownie recipe requires 2/3 cup of sugar for 1/3 batch of brownies. How much sugar is need for 1 batch of brownies

• 2/9 cup
• 1 cup
• 1 & 1/3 cups
• 2 cups

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.

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 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.

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

Does the table represent a proportional relationship?

• yes
• no