Direct Inverse

• Direct

• Inverse

• Neither

The table represents which type of variation?

• Direct

• Inverse

• Neither

Which graph represents a direct variation?

• A

• B

• C

• D

If y varies inversely with x and y = 8 when x = 4, what is the value of y when x = 16?

• 2

• 4

• 32

• 64

The number of calories burned while jogging varies directly with the number of minutes spent jogging. If Jack burns 150 calories by jogging for 20 minutes, how many calories does he burn by jogging for 30 minutes?

• 100 calories

• 180 calories

• 200 calories

• 225 calories

The time required to complete a job varies inversely as the number of people working. If it took 4 hours for 7 construction workers to pave a road, how long would it have taken 3 construction workers to have done the same job?

• 5 hours

  15 minutes

• 7 hours

  30 minutes

• 9 hours

  20 minutes

• 11 hours

  10 minutes

On a roller coaster, the distance between seats varies inversely to the number of seats. On a new roller coaster at Disney, one ride is going to have 80 seats spaced 16 meters apart. What is the constant of variation?

• 1280

• 5

• Direct

• Inverse

• Neither

If y varies inversely with x and y = 15 when x = 2, what is the value of x when y = 10?

• 3

• 300

• 30