Direct Variation

Suppose y varies directly as x. If x = 27 when y = 6, find x when y = 2.

• 0.44

• 81

• 23

• 9

Tags

TEKS.MATH.7.4C

The amount a store earns varies directly as the number of hours. A local store takes in $11,500 in a 4 hour period. Estimate how many hours it would take the store to earn $23,000

• 2 hours

• 8 hours

• 11,504 hours

• 66,125,000 hours

Tags

TEKS.MATH.7.4D

Suppose y varies directly as x. If x = 24 when y = 8, find y when x = 33.

• -1

• 5.8

• 11

• 99

Tags

TEKS.MATH.7.4C

The number of apples sold varies directly as the cost. If 4 apples cost $0.45, find the cost of 12 apples.

• $1.35

• $106.67

• $0.45

• $0.15

Tags

TEKS.MATH.3.3G

Suppose y varies directly as x. If y = 30 when x = 8, find y when x = 4.

• 1.07

• 15

• 26

• 60

Tags

TEKS.MATH.7.4C

The size of a box varies directly as its mass. A 20 cubic centimeter box has a mass of 40 kg. What is the size of the box if the mass is 100 kg.

• 8 cubic centimeters

• 50 cubic centimeters

• 80 cubic centimeters

• 200 cubic centimeters

Tags

TEKS.MATH.6.5B

Suppose y varies directly as x. If y = 150 when x = 3, find y when x = 5.

• 0.1

• 90

• 153

• 250

Tags

TEKS.MATH.7.4C

On a scale, yards vary directly as feet. If 3 feet represent 30 yards, how many yards represent 5 feet.

• 0.5 yards

• 18 yards

• 32 yards

• 50 yards

Tags

TEKS.MATH.3.3G

Suppose y varies directly as x. If y = -4 when x = 32, find x when y = -0.375.

• 0.05

• 3

• 27.6

• 341.3

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

CCSS.7.RP.A.3

The number of books sold varies directly as the cost of the books. If 8 books cost $10.40, how many books can be bought for $32.50?

• 25 books

• 30 books

• 32 books

• 42 books

Tags

TEKS.MATH.3.3G