Direct Variation Form

Write a direct variation equation for this proportional relationship.

• y=4x

• y=1/8x

• y=1/4x

• y=8x

The amount of money earned on a job is varies directly with 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

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

• 26

• 3

• 58.5

• 2

Does the relationship in the table represent direct variation?

• Yes

• No

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

• 4/5

• 17

• 16

• 25

n varies directly with c. If c = 24 when n = 18, what is c when n = 22?

• 88/3

• 28

• 66/4

• 24

Write a direct variation equation for this proportional relationship.

• y = 1/3x

• y = 3x

• y = 1/2x

What is the constant of proportionality, m, represented in this table?

• 8

• 16

• 24

• 2

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

• y=32x

• y=16x

• y=2x

• y=(1/2)x

Does this table represent a proportional relationship (direct variation)?

• Yes

• No