Proportional Relationships Ryan Situps

Select all graphs that represent a proportional relationship.

• 
• 

Write the equation of the proportional relationship using the format y = kx.

What is the constant of proportionality? Use the format k = 2.

When two ratios are equal they are .

(a)  

• Proportional

• Ratio

• Rate

• Unit Rate

Two quantities are in a ​ (a)   if the two quantities vary and have a constant ratio between them.

• proportional relationship

• proportional

• unit rate

• nonproportional

• constant of proportionality

Complete the table to show a proportional relationship between x and y, where the constant of proportionality is 3. | x | y | |---|----| | 1 | 3 | | 2 | 6 | | 4 | ? | | 5 | 15 |

• 9

• 12

• 18

• 21

Two quantities are ​ (a)   if the ratios comparing them are equivalent.

• proportional

• nonproportional

• constant of proportionality

• proportion

Write the equation of the graph. Use the format y = kx.

What is the constant of proportionality?

• k = 3

• k = 1/3

• k = 3x

• k = 1/3x

Write an equation for the relationship between x and y. Use format y = kx.