Proportional Relationships & Constant of Proportionality

What makes a graph proportional?

• Straight line
• The line goes through the origin
• Curvy line
• Straight line and the line goes through the origin

Proportional or Non-Proportional?

• Proportional

• Non-Proportional

Proportional or Non-Proportional?

• Proportional

• Non-Proportional

Which graph is non-proportional?

• A

• B

• C

• D

Proportional or Non-Proportional?

• Proportional

• Non-Proportional

Which best describes the table?

• proportional
• non-proportional

Does the table represent a proportional relationship?

• yes

• No

• Not enough information to determine

What is the constant of proportionality?

• $3
• $4
• $2
• $9

Determine the missing value in the table.

• 15
• 3
• 1/3
• 9

Identify the constant of proportionality.

• 25

• 50

• 1/50

• none (not proportional)