Directly Proportional Relationships

What is the unit rate?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

How many tbsp of honey is needed for 20 cups of flour?

• 2

• 18

• 25

• 16

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.

The data in the table is directly proportional. What is the constant of proportionality?

• $3/hour

• 4 hours per dollar

• 1/9 dollar per hour

• $9/hour

Find the constant of proportionality for this table of values.

• k=3

• k=1

• k=0

• k=4

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

• y

• x

• 14

• y=14

What is the constant of proportionality for the data in the table?

• 45 miles per hour

• 90 hours for a mile

• 0.222 distance per time

• 45 hours per mile

Which equation matches the graph?

• y = 7x

• y = 42x

• y = 6x

• y = 2x

What is the constant of proportionality that relates fuel in gallons used to the distance in miles?

• A

• B

• C

• D

Which of the following is the equation used to write a directly proportional relationship?

• y = x/k

• y = kx

• x = y//k