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Proportional Relationship Given a Graph
Contributed by: Almanzar
(Original author: Mohamed)
Straight Line that passes through the origin 
Just needs to be a straight line
Needs to start at the origin. Doesn't necessarily need to be a straight line. 
Have a Constant of Proportionalitybetween x and y
In order for a graph to be proportional it must have ALL of the following: 
Select ALL that apply. 
Determine whether this graph is proportional or not.
Yes
No
Proportional or Not? 
Proportional
Not Proportional
Determine whether this graph is 
proportional or not. 
Yes
No
Choose :is the relationship between the two quantities proportional?

Yes
No
Choose :is the relationship between the two quantities proportional?

Yes
No
The graph shows a proportional relationship between the amount of nuts and dried fruit in a trail mix. 
You want to know how many pounds of dried fruit there are per pound of nut. 
What point represents the unit rate?
(1,2)
(2,1)
(2, 0,5)
(0,0)
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