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Marty is saving money to buy a new computer. He received for his birthday and saves of each week’s paycheck.

Does this situation represent a proportional relationship? If it does, identify the constant of proportionality. If it does not, explain why not.  Homework Help ✎

After weeks does Marty have twice as much money as he does after weeks?

No. Be sure you know why this is not a proportional relationship.