Constant of Proportionality

When we compare quantities, we compare them as _____ over ______. 

• x over y
• y over x
• rate over one
• peanut butter over jelly

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Cheddar Cheese cost $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?

• x = 4.25y

• y = 4.25x

• y = 4.25 - x

• y = 4.25 + x

Tags

CCSS.6.EE.C.9

Write an equation for this situation.

• k=19.25x
• y=19x
• y=19.25x
• y=9.5x

Tags

CCSS.6.EE.C.9

Which best describes the graph represented in this table?

•  proportional
• non-proportional

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

Tags

CCSS.7.RP.A.2B

6. AMUSEMENT PARKS The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

• 32 People
• 32 Min.
• 12.5 Min.
• 12.5 People

Tags

CCSS.7.RP.A.3

What is the Constant of Proportionality?

• 46
• 92
• 0.2
• not proportional

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 5

• k = 1/5

• k = 1

• k = 2.5

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Write an equation for this relationship.

• y=18x
• y=18.50x
• y=22.50x
• y=22x

Tags

CCSS.6.EE.C.9

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional

Tags

CCSS.7.RP.A.2D