Review for Unit 3 Quiz

Review for Unit 3 Quiz

Proportional Relationships

Multiple Choice

What does the ordered pair (20, 3000) represent?

• The machine folds 3,000 sheets in 20 minutes.
• The machine folds 20 sheets in 3,000 minutes.
• There are 3,000 sheets in 20 minutes.
• There are 20 sheets in 3,000 minutes.

Multiple Choice

What does the point (2, 94) represent in this situation?

• Every week, they earn $94.
• After 94 weeks, they save $2.
• After 1 week, they save $47.
• After 2 weeks, they save $94.

Multiple Choice

Is this table proportional?

• Yes
• No

Multiple Choice

Is this graph proportional?

• Yes
• No

Multiple Choice

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Multiple Choice

Is this graph proportional?

• Yes
• No

Linear Relationships

Multiple Choice

What is the slope?

• 2
• 1/2
• 1
• 1.5

Multiple Choice

What is the slope?

• 2/5
• 5/2
• 3
• 5.5

Multiple Choice

What is the slope?

• 1/2
• 2
• 7
• 3

Multiple Choice

Select the INCORRECT statement about this scenario given the graph.

• The starting height of the banana tree is 8 inches

• The tree is growing consistently each day

• This is an example of a proportional relationship

• The tree grows 4 inches each day

• At day 3, the banana tree was 20 inches in height.

Multiple Choice

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5
• y = 2.50x + 3
• y = 2.50x 
• y = 3x + 2.50

Multiple Select

Select all of the equations that have graphs with the same y-intercept as:

 $y=3x-8$  

•  $y=3x-9$  

•  $y=3x+8$  

•  $y=3x-8$  

•  $y=\frac{1}{2}x\ -8$  

•  $y=2x-8$  

Multiple Select

Lawrence and Darren each rent a canoe. The cost Lawrence's rental can be represented by the equation y=10x. Darren's rental is shown in the graph. Determine who pays more per hour for the canoe rental and how much each person pays per hour.

• Lawrence pays more per hour.

• Darren pays more per hour.

• Lawrence pays $10 per hour.

• Darren pays $12 per hour.

• Lawrence pays $12 per hour.