Exploring Constant of Proportionality in Tables

What is the constant of proportionality?

• A random number

• A fixed percentage

• A unit rate

• A variable rate

How do you calculate the constant of proportionality from a table?

• Divide Y by X

• Subtract X from Y

• Multiply X by Y

• Add X and Y

In the example, what is the result of 90 divided by 2?

• 45

• 30

• 90

• 60

What does the result 45 represent in the context of the example?

• 45 hours per mile

• 45 miles per hour

• 45 miles in 2 hours

• 45 miles in 45 hours

If you divide any pair of values in the table, what will you get?

• Zero

• A random number

• The same constant of proportionality

• Different results each time

What equation can be written using the constant of proportionality 45?

• y = x/45

• y = 45 + x

• y = 45 - x

• y = 45x

In the second example, what is the result of 48 divided by 4?

• 13

• 11

• 12

• 10

What does the result 12 represent in the second example?

• 12 hours per mile

• 12 miles per hour

• 12 miles in 12 hours

• 12 miles in 4 hours

What is the constant of proportionality in the second example?

• 10

• 11

• 12

• 13

What is the unit of the constant of proportionality in the second example?

• Miles per minute

• Miles per hour

• Hours per mile

• Minutes per mile