SOLUTION: Why must a graph of a relationship run through the origin in order for it to be proportional?

Algebra.Com
Question 925206: Why must a graph of a relationship run through the origin in order for it to be proportional?
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Any equation that doesn't go through the origin does not have the form,
or and therefore can't be used for proportions.

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