SOLUTION: describe a situation with two quatities that have a proportonal linear relationship

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Question 939368: describe a situation with two quatities that have a proportonal linear relationship
Answer by srinivas.g(540) About Me  (Show Source):
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take two quantities: no of pens , total cost of pens
as no of pens increases , total cost of pens also increases
as no of pens decreases, total cost of pens also decreases
hence no of pens is in direct proportion with total cost of pens