Algebra - Checkpoint 3 Review

Which situation best shows causation?

• The number of pages printed on a copier affects the amount of printer ink used.

• The base length of a triangle affects the height of the triangle.

• The number of toothbrushes in a home affects the number of pets in the home.

• The number of shirts sold in a store affects the temperature in a store.

• -7

• 80

• -21

• 23

Walter sold 41 tickets to a play. He collected $264 by selling both adult and children's tickets.

• - Each adult ticket costs $8.50

• - Each children's ticket costs $5.25

Which system og equations can be used to find a, the number of adult tickets, and c, the number of children's tickets that Walter sold?

Kumi works with her dad at a car lot. She tracked the value of the cars which customers

traded in as well as the costs of the new cars they purchased. The table shows the data for

several customers. A linear function can be used to model the data.

Based on the table, what is the best prediction of the cost of the new car a customer

purchases if their trade-in is worth $5,500?

• $30,900

• $63,200

• $52,400

• $34,000

A small trophy weighs 4 pounds. A large trophy weighs 9 pounds. A shelf in a display case

holds 100 pounds of trophies and holds a total of 20 trophies.

How many small trophies are on the shelf?

• 64

• 5

• 16

• 4

Which graph best represents a system of equations that has exactly one solution?

• 
• 
• 
• 

The table shows the heights and diameters of several cylinders.

What does the correlation coefficient for the data indicate about the strength of the linear

association between the height and diameter of these cylinders?

• Strong positive correlation

• Strong negative correlation

• Weak positive correlation

• Weak negative correlation

Which situation best shows causation?

• The number of pages printed on a copier affects the amount of printer ink used.

• The base length of a triangle affects the height of the triangle.

• The number of toothbrushes in a home affects the number of pets in the home.

• The number of shirts sold in a store affects the temperature in a store.

The tables of ordered pairs represent some points on the graphs of lines f and g.

Which system of equations represents lines f and g?