Is It Proportional Equations

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

Tags

CCSS.7.RP.A.2B

Kurt's grandparents get him a puppy for his 13th birthday, and he names the puppy Bailey. Kurt does a good job taking care of Bailey, and she's growing so fast! When Bailey is 1 month old, she weighs 3 pounds. When she is 3 months old, she weighs 7 pounds. What is the constant of proportionality?

• Yes. The constant of proportionality is 3.

• No. The graph does not go through the origin.

• Yes. The constant of proportionality is 7.

• No. The graph is not a straight line.

Tags

CCSS.7.RP.A.2B

Charlie is passionate about movies and dreams of going to film school. His goal for the next year is to watch every movie that won the Academy Award for Best Picture. He's already seen some of them and now plans to watch one per week until he's seen them all. After following his plan for 2 weeks, Charlie has seen 5 of the Best Picture winners. After 7 weeks, he has seen 10 of them. Is this a proportional situation?

• Yes. The constant of proportionality is 5/2.

• No. The graph does not go through the origin.

• Yes. The constant of proportionality is 0.7

• No. The graph is not a straight line.

Tags

CCSS.7.RP.A.2B

Which equations show a proportional relationship between x and y? Select ALL answers.

• y = x + 3

• y = 3x

• y = x - 6

• y = 6x

Tags

CCSS.7.RP.A.2C

Anna's favorite book is about Johnny Appleseed, the American pioneer who planted apple trees all across the country. Inspired by the story, Anna plants an apple seed in her backyard and tends the seed as it slowly grows into a tree.

What is the constant of proportionality from the table?

• 0

• 1

• 2

• The table is not proportional.

Tags

CCSS.7.RP.A.2B

Every Sunday, Steven and his friends get together to play their favorite board game, The Gems of Rawumba. Whoever collects the most gems wins! Players can earn gems by building mines.

What is the constant of proportionality from the table?

• 0

• 1

• 4

• The table is not proportional.

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality?

• 0

• 3

• 25/3

• 3/25

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality?

• 3

• 4

• 2

• 1

Tags

CCSS.7.RP.A.2B

What makes a graph proportional?

• Straight line

• The line goes through the origin

• Curvy line

• Straight line and the line goes through the origin

Tags

CCSS.7.RP.A.2D

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Tags

CCSS.7.RP.A.2D