Proportional Graphs Equations

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.

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.

What is the formula for a proportional relationship?

• y=kx

• y=k/x

• z=ykx

• y=ky

What algebraic equation shows the relationship between the independent and dependent variables?

• y = ax

• y = x + 12

• y = -3x

• y = 

How much money would you make in 6 hours?

• $44

• $9

• $54

• $45

Does this graph represent a proportional relationship?

• Yes

• No

Does the table represent a proportional relationship?

• Yes.

• No.

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.

How many tbsp of honey is needed for 20 cups of flour?

• 2

• 18

• 25

• 16

Write an equation for this relationship.

• y = 18x

• y = 18.50x

• y = 22.50x

• y = 22x