Slope Direct Variation Constant of Variation and Proportions

Solve the proportion below:  (show work)

• 42

• 6

• 2

• 28

Solve the Proportion:
X/9 = 9/27

• 9

• 3

• 81

• 245

Do the ratios form a proportion?

• Yes, they form a proportion.

• No, they do not form a proportion.

Dev keeps a record in graph form of how far his car travels and the number of gallons of gasoline it uses.
What is the slope of the graph?

• 64

• 128

• 32

• 16

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $100 is earned for every 2 hours worked

• $500 is earned for every 8 hours worked

• $200 is earned for every 3 hours worked

Do the values in the table show direct variation? If so, what is the constant of proportionality?

• Yes; 1/4

• Yes; 4

• Yes; 2

• No

Does this show direct variation?
y=2x

• yes

• no

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

What is the slope?

• 5

• 1/5

• 15

• 10

Does this graph represent a proportional relationship?

• Yes , goes through the origin.

• No, no because it goes through the orgin