Direct Variation Ordered Pairs

Which set of ordered pairs represent a direct variation?

• <(1,12), (2, 6), (3, 4), (4, 3)>

• <(1, 3), (2, 3), (3, 3), (4, 3)>

• <(1, 9), (2, 7), (3, 5)>

• <(4, 2), (6, 3), (8, 4), (10, 5)>

Y varies directly to x. If y = 16 when x = 4, which equation represents this situation?

The point (2,4) is an element of direct variation. Which point is NOT an element of this variation?

• (0, 0)

• (4, 2)

• (1, 2)

• (3, 6)

Ounces of medication vary directly with the weight of the patient. If a 120-pound adult requires 3 ounces of a medication, how many ounces would be needed for a 200-pound adult?

• 2

• 3

• 5

• 9

• 
• 
• 
• 

Tags

8.5.G

• A

• B

• C

• D

Tags

CCSS.8.F.A.1

Y varies directly as x. If y = 12 when x = 15, what is y when x = 20?

• 4/5

• 17

• 16

• 25

n varies directly with c. If c = 24 when n = 18, what is c when n = 22?

• 88/3

• 28

• 66/4

• 24

Tell whether the following quantities vary directly. That is, do the following ordered pairs show direct variation?

• Yes

• No

Tell whether the following quantities vary directly. That is, do the following ordered pairs show direct variation?

• Yes

• No