Proportional Relationships

Use the known values in the table. What is the constant of proportionality?

(a)  

Answer explanation

Don't get distracted by the variables in the table. They are just there to confuse you. y=kx where k is the constant of proportionality. If you know a y and x value, you should calculate y/x to find the constant of proportionality.

Tags

CCSS.7.RP.A.2B

Use the known values in the table. What is the constant of proportionality?

• 32

• .03125

• h

• I don't know.

• 1/2

Answer explanation

Don't get distracted by the variables in the table. They are just there to confuse you. y=kx where k is the constant of proportionality. If you know a y and x value, you should calculate y/x to find the constant of proportionality.

Tags

CCSS.7.RP.A.2B

Check all that apply.

• This relationship is linear.

• This relationship is proportional.

• If graphed, the line will pass through the origin.

Tags

CCSS.7.RP.A.2D

What does the coordinate (2.5,80) mean as it applies to this graph?

• 2.5 oz of unpopped kernels makes 80 oz of popped kernels

• 2.5 oz of popped kernels makes 80 oz of unpopped kernels

Tags

CCSS.7.RP.A.2D

What coordinates would represent the unit rate of unpopped to popped popcorn?

Remember to write your coordinates like this: (x,y)

A unit rate is a ratio of many units per one unit.

(a)  

Tags

CCSS.7.RP.A.2D

What happens at (0,0)?

Select all that apply.

• If you do not have any unpopped kernels, you cannot make any popped kernels.

• You are not able to make popcorn.

• Zero kernels will make zero pops!

• This relationship is proportional because the line goes through the origin.

Tags

CCSS.7.RP.A.2D