Proportional Relationships

Does the table represent a proportional relationship?

• yes
• no

Are the following ratios proportional?
8/10, 28/35

• yes
• no

Explain what the circled Ratio means.

• Someone is going 62 miles per hour.

• Someone is going 62 miles per second

• 62

• It's a ratio

Are the following ratios proportional?
21/30, 56/80

• yes
• no

The cost of 4 pounds of grapes is $24.36. What is the constant of proportionality that relates cost in dollars, y, to the number of pounds of grapes, x?

• 6.09
• 20.36
• 8.12
• 28.36

Does the table represent a proportional relationship?

• yes
• no

What is the constant of proportionality?

• 15
• 5
• 75
• 25

What is the constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

Are the following ratios proportional?
3/4, 36/40

• yes
• no

The constant of proportionality can be found by finding the __________  _____________.

• unit rate
• ratio rate
• proportion answer
• rational number