Equations for Proportionality Relationships

Does this equation represent a proportional relationship?

• Yes

• No

Does this equation represent a proportional relationship?

• Yes

• No

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14

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

Write an equation for this relationship.

• y=1/5x
• y=1/2x
• y=2x
• y=5x

Is the given table a proportional relationship? If so, write an equation that relates y to x.

• Yes;  y=1/3x
• Yes;  y=3x
• Yes;  y=5x 
• No

Does the table show a proportional relationship? 

• Yes, COP = 7
• Yes, COP  = 0.7
• Yes, COP = 0.14
• Yes, COP = 14/100

Does the table show a proportional relationship? 

• Yes, the COP = 0.325
• No, the COP is different for each row.

What is the constant of proportionality for this table?

• 1/9
• 9
• 8