Proportional and Not Proportional Relationships

Does the equation show a proportional relationship?

• Yes

• No

Shawn makes $7.50 an hour to babysit for her next door neighbors.  Describe the graph of this relationship.

• Proportional

• Non-proportional

Write an equation for this situation.

• y=9.75x

• y=19x

• y=19.25x

• y=9.5x

What is the unit rate for the rain fall?

• 2 cm per hour

• 1 cm per hour

• ¹/₂ cm per hour

• 4 cm per hour

An animal shelter has 20 cats an 25 dogs. What is the ratio of cats to dogs.

• 5 to 4

• 4 to 9

• 4 to 5

• 1 to 5

What does the y-intercept represent?

• It costs $30 for each mile drive.

• There is an initial charge of $30 for the moving van.

• There is an initial charge of $2 for the moving van.

• It costs $1 for every 2 miles driven.

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

• 45

• 90

• 135

• 2

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

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

• y

• x

• 14

Is the graph proportional?

• Yes

• No