Chapter 5 Test Review

What is Greg's unit rate if Greg can build 1/7 of a brick wall in 1/12 of an hour?

1 5/7 of a brick wall in 1 hour

Anna opened a bank account. She adds the same amount of money to her account each month. The table shows the amounts of money in her account at the end of certain numbers of months. How much money does Anna add to her bank account each month?

15

Eli builds model airplanes at a constant rate. He can build 5 model airplanes in 150 minutes and 10 model airplanes in 300 minutes. How long would it take him to build 15 model airplanes?

450

This graph shows the proportional relationship between the number of hours Richie runs and the number of miles he runs. What is the constant or proportionality?

6 miles run per hour

What is the constant of proportionality in the equation y = 16.41x

16.41

The unit rate for a proportional relationship is $6. Which point must be located on the line of the graph?

(1,6)

This graph shows the proportional relationship between the number of red and white paints used to make pink paint. What is the constant of proportionality?

2/3 cup red paint / 1 cup white paint

The table shows the number of baskets Javier attempted and the number of baskets he made during his first three basketball games this season. Which statement correctly describes the relationship between the number of baskets Javier attempted and the number of baskets he made during each game?

The relationships is not proportional because the ratio of the number of baskets attempted to the number of baskets made is not constant.

Does the equation show direct variation? y = -5x

Yes

The table shows how much a store charges for a certain number of pencils. Which equation could be used to calculate the cost, c, or any number of pencils, p?

c = 0.12p

Which equation represents the proportional relationship of the total amount of money earned, m, to the number of hours worked, h, at a pay rate of $19 per hour?

m = 19h

A hose fills a small swimming pool at a rate of 15 cubic feet per 60 seconds. Which equation can be used to find the amount of cubic feet, y, in x seconds?

y = 1/4x

The number of chaperones attending the field trip is proportional to the number of children attending. The table shows this relationship. What is the value of the constant of proportionality?

1/3

The table represents a proportional relationship between the number of tickets purchased for a concert and the total cost of the tickets. Using the information from the table, what would be the total cost of 4 concert tickets?

90

Ms. Garcia drove from her house to her sister's house. The distance y, in miles, she drove based on the time x, in hours, is graphed on a coordinate plane. Her drive is represented by the line segment with endpoints at (0,0) and (2.5,120). Based on the point on the graph with an x-coordinate of 1, which statement must be true?

Ms. Garcia drove at a unit rate of 48 miles per hour.

Does the equation show direct variation? x = 4y

No

Does the equation show direct variation? y = x + 2

No

The graph represents the number of students Sandra tutors per hour. What does the point (20, 60) mean in this situation?

Sandra will have tutored 60 students in 20 hours.

A butterfly can fly 82 feet in four seconds and a dragonfly can fly 50 feet in two seconds. Which can fly faster and by how much?

The dragonfly is 4.5 feet per second faster