Direct Variation Form

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

• yes

• no

Is this a direct variation?
y=2x

• yes

• no

What does the Direct Variation Equation look like?

• y= kx

• y = mx + b

• y = b

• y = x

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

Write the equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x

y varies directly with x, and y is 16 when x is 32. Find the k value and then write the equation

• y=32x

• y=16x

• y=2x

• y=(1/2)x

Is this a direct variation?

• yes

• no

Which graph shows a graph with direct variation?

• A

• B

• C

• D

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=100x

• y=5.25x

• y=4/21x

What is the rate of change?

• 3

• -3

• 10

• -6