Determining Proportional Relationships

What makes a graph proportional?

• It is a straight line.

• It goes through the origin.

• It does not go through the origin.

• If it goes down instead of up.

Which of the following tables are proportional? (more than one!)

• 
• 
• 

Which of the following equations is not proportional?

• $\frac{x}{3}=27$

• 4x = 18

• $\frac{1}{9}x\ =\ 4$

• -2x + 7 = 11

What is the unit rate for the table?

• $1 / 3 watermelon

• $3 / 1 watermelon

• 1/3 watermelon / pound

• $0.33 / 1 watermelon

Which graph is proportional?

• 
• 
• 
• 

What is a way I can tell if a table is proportional?

• $\frac{y}{x\ }$ is equivalent (the same) for all points

• It goes through the origin

• The line goes up.

• You can't.

Does the table represent a proportional relationship?

• Yes.
• No.

Tags

CCSS.7.RP.A.2A

Which statement best describes the relationship between x and y in the table?

• Proportional
• Not Proportional

Tags

CCSS.7.RP.A.2A

REVIEW QUESTION
Is this table proportional or non-proportional?

• Proportional
• Non-Proportional
• both
• neither

Tags

CCSS.7.RP.A.2A

Is this equation y = 14x showing proportionality?

• yes

• no

Tags

CCSS.8.EE.B.5