Proportional Relationships Equations, Tables, and Graph

Determine if the table above is proportional and how do you know?

• The table is proportional because the unit rate is a constant 0.33.

• The table is proportional because it passes through the origin.

• The table is proportional because the unit rate is a constant 0.28

• The table is not proportional because the unit rate is not constant.

Tags

CCSS.7.RP.A.2A

What ratio is equivalent to 4:5? Select all that apply.

• 8:10

• 20:25

• 5:6

• 1:5/4

Tags

CCSS.6.RP.A.3A

How many tbsp of honey is needed for 20 cups of flour?

• 2

• 18

• 25

• 16

Tags

CCSS.6.RP.A.3B

The constant of proportionality can be found by finding the __________  _____________.

• unit rate

• ratio rate

• proportion answer

• rational number

Tags

CCSS.7.RP.A.2B

Which graph is non-proportional?

• A

• B

• C

• D

Tags

CCSS.7.RP.A.2D

Write an equation for this relationship.

• y = 18x

• y = 18.50x

• y = 22.50x

• y = 22x

Tags

CCSS.5.OA.B.3

What is the formula for a proportional relationship?

• y=kx

• y=k/x

• z=ykx

• y=ky

Tags

CCSS.7.RP.A.2C

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. 

If the cups of milk, x, is compared to the cups of flour, y, what is the equation for y=kx?

• k=2x

• y=0.5x

• k=0.5

• y=2x

Tags

CCSS.5.OA.B.3

Write an equation for the proportional relationship showing number of cups of pineapple juice, p per recipe, r.

Answer explanation

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

Remember the left column is the x and the right column 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

Select all the tables that show a proportional relationship between x and y in the ratio table.

• 
• 
• 
• 

Answer explanation

Proportional tables show a consistent constant that each x can be multiplied by to get the corresponding y in the ratio table.

Divide each ratio $\frac{y}{x}$ to see if there is an consistent constant that takes each x to each y in the ratio table.

Tags

CCSS.7.RP.A.2D