Direct and Inverse Relationship

Identify whether the given relation is Direct or Indirect Proportion?
The number of workers on a job and the time to complete the job

• Direct Proportion

• Indirect Proportion 

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

• 14

• 10

• 2

• -14

Suppose y varies inversely with x.
If y = 150 when x = 2, find y when x = 25.

• 300

• 75

• 1,875

• 12

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours?

• $394

• $443.25

• $472.80

• $512.20

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/4

• Yes; 4

• Yes; 2

• No

Is this a direct variation?
y=2x

• yes

• no

Determine the type of variation:

• Direct

• Inverse

• Neither

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

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

• 4/5

• 17

• 16

• 25

Is this a direct proportion?

• yes

• no