Proportionality

Does the table represent a proportional relationship?

• Yes.
• No.

Tags

CCSS.7.RP.A.2

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.
• The graph is proportional because it is linear and passes through the origin.
• The graph is not proportional because it does not pass through the origin.
• The graph is not proportional because it is not linear and it does not pass through the origin.

Tags

CCSS.7.RP.A.2

Write an equation for this relationship.

• c = 0.05d

• c = 18.50d

• d = 0.05c

• d = 18.50c

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

What is the constant of proportionality?

• k = 15 gallons of water per minute

• k = 1/15 gallons of water per minute

• k = 15 minutes per gallon of water

• k = 1/15 minute per gallons of water

Tags

CCSS.7.RP.A.1

Create an equation for this proportional relationship. 

• y = 10x
• y = 5x
• x = 5y

• x = 10y

Tags

CCSS.7.RP.A.2

Sally will earn $30 for every 5 hours that she babysits. Which of the following equations can be used to represent the proportional relationship?

• y = 1/6x +30

• y = 6x

• y = 5x + 6

• y = 6x +5

Tags

CCSS.7.RP.A.1

CCSS.7.RP.A.2

Water runs from a hose into a bucket at a steady rate. The amount of water in the bucket for the time it is being filled is shown in the graph.

What does the point (12,5) tell you about the water in the bucket?

• In 12 seconds there is 5 gallons in the bucket.

• In 5 seconds there is 12 gallons in the bucket.

Tags

CCSS.7.RP.A.1

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

Tags

CCSS.7.RP.A.2

Write the equation for the table given.

• y = 16x

• y=8x

• y=12x

• not proportional

Tags

CCSS.7.RP.A.2

Select ALL equations that are proportional.

• y = 3x

• y = 25x

• y = 7x

• y = 2x - 1

• y = 4000x

Tags

CCSS.7.RP.A.2