Direct Variation

The amount of money earned on a job is directly proportional to the number of hours worked.  If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

• $2
• $308
• $1.57
• $265

Tags

CCSS.6.RP.A.3C

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

What ordered pair does a direct variation always go through when graphed?

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

If y vaires directly with x and y= 12 when x= 15. What is the value of x when y= 16?

• 12.8
• 20
• 11.25
• 19

A dishwasher uses 65 gallons of water to wash 5 loads of dishes. How many gallons of water would be used to wash 12 loads? 

• 60 gallons
• 780 gallons
• 156 gallons
• 12/13 gallons

Tags

CCSS.HSF-LE.A.1B

The number of kilograms of water in a person’s body varies directly as the person’s mass.  A person with a mass of 90 kg contains 60 kg of water.  How many kilograms of water are in a person whose mass is 75 kg?

• 50 kg water
• 72 kg water
• 94 kg water
• 150 kg water

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

What does the Direct Variation Equation look like?

• Y= kx
• y = mx + b
• y = b
• y = x

y varies directly with x. If y = 12 when x = 2, what is the constant of variation?

• k = 12

• k = 4

• k = 6

• k = 2

A map of Texas is scaled so that 3 inches represents 90 miles. How far apart are Pecos and Fort Stockton if they are 1.8 inches apart on the map?

• 54 miles
• 15 miles
• 30 miles
• 50 miles