Math 8: 3.1-3 Review: Constant of Proportionality

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

• y

• x

• 14

Tags

CCSS.7.RP.A.2B

During a math game, Jackson, Noah, and Harper discovered a mysterious table with numbers. They need your help to find the constant of proportionality (slope) for this table. Can you help them?

• 1/9

• 9

• 8

Tags

CCSS.7.RP.A.2B

Abigail and James are competing in a lemonade stand contest. They noticed that their earnings can be represented by an equation. Ava, their friend, wants to help them find the equation. Can you help Ava write an equation for this situation?

• y=9.75x

• y=19x

• y=19.25x

• y=9.5x

Tags

CCSS.5.OA.B.3

Craig earns extra money as a lifeguard. He earned $37 for working 4 hours one day and $64.75 for 7 hours another day.  What is the constant of proportionality? 

(Think dollars per hour)

• $37
• $64.75
• $9.25
• $18.50

Tags

CCSS.7.RP.A.2B

Which graph is proportional?

• A
• B
• None of the graphs
• All of the graphs are proportional

Tags

CCSS.7.RP.A.2D

Ethan, Ava, and Arjun are playing a game to fill in the missing value in a table. Can you help them figure it out?

• 15

• 3

• 1/3

• 9

Tags

CCSS.5.OA.B.3

What is the constant of proportionality (slope) for the following graph?

• 80
• 20
• 40
• 160

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality (slope).

• k = 5

• k = 1/5

• k = 1

• k = 2.5

• none (not proportional)

Tags

CCSS.7.RP.A.2D

Identify the constant of proportionality.

• k = 25

• k = 50

• k = 100

• k = 1/50

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Write the equation for the table given.

• y = 16x
• y=8x
• y=12x

Tags

CCSS.5.OA.B.3