Direct Proportion Tables Equations Graphs

Does this graph represent a proportional relationship?

• Yes

• No

What does the point (2, 94) represent in this situation?

• Every week, they earn $94.

• After 94 weeks, they save $2.

• After 1 week, they save $47.

• After 2 weeks, they save $94.

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

• y

• x

• 14

Which statement about this graph is true?

• It is a direct variation

• The cleaner uses 1 cup of vinegar to every 2 cups of cleaner

• The cleaner uses 4 cups of cleaner to 2 cups of vinegar

• All of the above

Write the equation of the proportional relationship using the format y = kx.

Does the table represent a proportional relationship?

• Yes.

• No.

What is the equation for a proportional relationship?

• y=kx

• y=k/x

• z=ykx

• y=ky

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.

Using the graph above, determine the constant of proportionality.

• k = 0

• k = 1

• k = 3

• k = 6

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.

• The graph is proportional because it is linear and passes through the origin.

• The graph is not proportional because it does not pass through the origin.

• The graph is not proportional because it is not linear and it does not pass through the origin.