Constant Proportionality in Graphs

What is the constant of proportionality? 

• 2

• 10

• 5

• 1/5

What makes a graph proportional?

• A straight line (linear) that goes through the origin

• Linear (straight line), that does NOT go through the origin.

 

Which graph shows a proportional relationship?

• 
• 
• 
• 

How much water was used in 9 minutes?

• 45

• 46

• 44

• 47

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $200 earned for every 2 hours worked

  is the unit rate

• $500 is earned for every 8 hours worked

• $300 is earned after working 4 hours

Is this graph proportional?

• Yes

• No

• Sometimes

• Both

What is the constant of proportionality? 

• 4

• 1/4

• 8

• 1/8

Is the given table a proportional relationship? If so, what is the constant of proportionality?

• Yes; X=1/3

• No

• Yes; X=3

• Yes; X=5

If the constant of proportionality is 10, which of the following is the correct proportional equation?

• 10=kx

• 10=k

• y=10k

• y=10x

Write an equation for this relationship.

• y=1/5x

• y=1/2x

• y=2x

• y=5x