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.7.EE.B.4

CCSS.7.RP.A.2

CCSS.7.RP.A.3

In a direct variation, y=39 when x=3.  Find the value of y when x=2.

• 26
• 3
• 58.5
• 2

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

Is this a direct variation?
y=2x

• yes
• no

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

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.7.RP.A.1

CCSS.7.RP.A.2

 y varies directly with x, and y is 16 when x is 32. Which equation represents this situation?

• y=32x
• y=16x
• y=2x
• y=(1/2)x

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

y varies directly with x. If y = 20 when x = 4, what is y when x = -2 ?

• -10

• 10

• -5

• 5

Tags

CCSS.7.RP.A.2

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

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

y varies directly with x. If y = -4 when x = -1, what is the constant of variation?

• k = 12

• k = 4

• k = 6

• k = 2

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

Find the unit rate: $6.20 for 5 pounds of lemons. How much does it cost for 3 pounds of lemons?

• $3.72

• $1.24

• $1.84

• $3.00

Tags

CCSS.7.NS.A.2

CCSS.7.RP.A.1

CCSS.7.RP.A.2

The amount of money earned on a job is directly proportional to the number of hours worked. If $240 is earned in 16 hours, how much money is earned in a 40-hour work week?

• $480

• $600

• $15

• $265

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3