Algebra I: Unit 6 Review

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

• direct variation
• inverse variation
• joint variation
• none of these

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSA.SSE.A.1

CCSS.HSF.LE.A.1

• direct variation
• inverse variation
• joint variation
• none of these

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSA.SSE.A.1

Determine the type of variation:

• Direct
• Inverse
• Neither

Tags

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

This relation is a direct variation.

{(7, -21), (-6, 18), (2, -6)}

Which equation represents the relation?

• y= -3x

• y = -3/x

• y = 3x

• y = -147 / x

What (if any) type of variation does this table represent?

• Direct

• Inverse

• Neither

What (if any) type of variation does this table represent?

• Direct

• Inverse

• Neither

Two relationships are described.

Relationship A: Erik biked 10 miles in 2 hours, and then he biked 30 miles in 6 hours.

Relationship B: Maryam baked 2 pies in 1 hour, and then she cooked 8 pies in 4 hours.

Which statement is true about these relationships?

• Neither relationship is a direct variation.

• Both relationships are direct variations.

• Only Relationship A is a direct variation.

• Only Relationship B is a direct variation.

This relation is an inverse variation.

{(1, 28), (4, 7), (14, 2)}

Which equation represents this relation?

• y = 28x

• y = 28 / x

• y = x / 28

• y = 7 / x

Ms. Ruggiero is having her roof fixed. The cost is $3000. The amount each roofer earns, R, varies inversely with the number of roofers, N, that will fix her roof. Which equation best represents this situation?

• R = 3000N

• N = 3000R

• RN = 3000

• N / R = 3000