Proportional Relationships

REVIEW QUESTION
Which best describes the graph represented in this table?

•  proportional
• non-proportional

Tags

CCSS.7.RP.A.2B

Is the graph proportional or non proportional?

• proportional
• non proportional

Tags

CCSS.7.RP.A.2D

Is the graph proportional or non proportional?

• proportional
• non proportional

Tags

CCSS.7.RP.A.2D

REVIEW QUESTION

Is this table proportional or non-proportional?

• Proportional - unit rate is 4

• Non-Proportional

• Proportional - unit rate is 1/4

• Not proportional - unit rate is 1/4

What is the constant of proportionality?

• 8

• 16

• 1/16

• there is none!

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality? 

• $37
• $64.75
• $9.25
• $18.50

Tags

CCSS.7.RP.A.2B

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

Tags

CCSS.6.EE.C.9

What are the main characteristics of a proportional relationship between two variables in a graph?

• They pass through the origin.

• They are a straight line and also pass through the origin.

• They are curved

• They have a negative relationship and pass through the origin.

Is this proportional? Why?

• No - it is not straight

• Yes - it is straight but does not go through (0,0)

• No - it is straight and goes through the origin

• Yes - it is straight and goes through (0,0)

What is the equation from the table? Hint: find the unit rate!

• y = x + 9

• y = 9x + 9

• y = 9x

• Not proportional so no equation