Ratios and Proportional Relationships Study Guide

If 2 pounds of melon costs $4.50 at the grocery store, how much would 7 pounds cost?

• $0.44

• $2.25

• $15.75

• $3.80

If 2 pounds of melon costs $4.50 at the grocery store, what is the unit rate per pound?

• $0.44 per pound

• $2.25 per pound

A ferry has to transport bikes on an island.  The table below shows the number of bikes transported and the number of trips made by the ferry.  Do the ratios in the table represent a proportional relationship? 

• Yes, the relationship is proportional

• No, the relationship is not proportional

Which table shows a proportional relationship between the number of miles and hours traveled?

• Car A

• Car B

• Car C

• Car D

Janet can sew 34 scarves in 2 hours. At this rate, how many scarves can she sew in 5 hours?

• 17

• 85

Determine if the relationship of dollars to guests represents a proportional relationship.

• Yes, this is a proportional relationship

• No, this is not a proportional relationship

What is the constant of proportionality of the following relationship?

• $10 per guest

• $20 per guest

• $2 per guest

• $5 per guest

Jamie bought 3 country songs on iTunes for $12.75. How much did he pay per song?

• $0.24 per song

• $4.25 per song

Jamie bought 3 country songs on iTunes for $12.75. If the cost per country song is a proportional relationship, which of the following equations can be used to determine the cost of any amount of country songs?

• k=12.75/3

• y=0.24x

• y=4.25x

• k=3/12.75

A lumberjack cuts down 1 ⅔ of an acre of trees in 1 ¼ days. How many acres of trees does the lumberjack cut down in one day?

• 1.33 acres der day

• 0.94 acres per day