Comparing Proportional Relationships

Does this graph represent a proportional relationship?

• Yes

• No

Does this graph represent a proportional relationship?

• Yes

• No

Does this equation represent a proportional relationship?

• Yes

• No

Solve the proportion

• x=5

• x=10

• x=22

• x=23

The graph shows the relationship of the amount of time (in seconds) to the distance (in feet) run by a jaguar.

Is the distance run by the Jaguar proportional to the time? Why or why not?

• Yes because the graph creates a straight line that passes through the origin.

• No because the graph does not create a straight line.

• No because the graph does not pass through the origin.

A graph needs to be a straight line and goes through _____ to be proportional.

• The origin

• The y-intercept

• The y-axis

• The x-axis

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.

y = x + 4 5x = y y = x + 5 x/5 = y

• y = x + 4

• 5x = y

• y = x + 5

• x/5 = y

A graph needs to go through _____ to be proportional.

• The origin

• The y-intercept

• The y-axis

• The x-axis

Which equations represents the relationship between pounds of food (y) and bags of dog food (x)?

• y=10x

• y=3x

• y=3x+1

• y=x+3