Review

Which graph does NOT show a proportional relationship between x and y

• 
• 
• 
• 

Tags

8.5.F

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.

• Yes, because it doesn't pass through the origin.

• Yes, because it intersects the y axis.

• No, because it intersects the x axis.

Tags

8.5.F

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Tags

8.5.F

Does this table represent a proportional relationship?

• Yes

• No

Tags

8.5.F

Which tables and graphs show a proportional relationship?

• A,B,D

• A,C,F

• B,D,E

• B,C,F

Tags

CCSS.7.RP.A.2D

A proportional relationship can be written as an equation in the form ____ = _____  _____

• y = k+x

• y = k-x

• y = kx

• y = k/x

Tags

CCSS.7.RP.A.2C

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Tags

CCSS.7.RP.A.2D

The table shows a proportional relationship. Which of the following is the equation for the number of cookies, c made with each cup of sugar, s

• s = 12c

• s = 24c

• c = 12s

• c = 24s

Answer explanation

Divide the y value in the ratio by the x value to get the constant.

Remember the top row is the x and the bottom row is the y in the ratio.

Proportional equations are written y=kx where k is the constant of proportionality.

Replace the x and y with variables they represent in the ratio.

Tags

CCSS.7.RP.A.2C

What is the constant of proportionality?

• $3

• $4

• $2

• $9

Tags

CCSS.7.RP.A.2B

Does the table represent a proportional relationship?

• yes
• no

Tags

CCSS.7.RP.A.2A