Proportional Relationships

How do I find the constant?

• k = x/y

• k = 2x

• k = y/x

• k = 2y

Which table shows a proportional relationship?

• A
• B
• C
• D

What is the constant ratio or constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

Write an equation for this relationship.

• y = 18x
• y = 18.50x
• y = 22.50x
• y = 22x

Which graph shows a proportional relationship between x and y?

• F
• G
• H
• J

According to the graph, what is the constant of proportionality?

• 5

• 3

Match the correct equation to the graph

• y = 4x

• y = 9x

• y = 10x

• y = 3x

What is the unit rate for the number of hours of study each week per class?

• 25 hours

• 5 hours

• 7 hours

• 10 hours

Which graph matches the table?

• A
• B
• C
• D

What do the points on the graph mean? Select all the correct answers.

• After 2 weeks, you have saved $94

• After 94 weeks, you have saved $2

• After 10 weeks, you save $94

• After 4 weeks, you have saved $188

• After 0 weeks, you have save $10