Interpreting graphs of proportional relationships (IM) (Full video)

Khan Academy

Supporting grades: 7

Description: Worked example interpreting graphs of proportional relationships. We are told the proportional relationship between the number of hours a business operates and its total cost of electricity is shown in the following graph, all right. So we know that our total cost, let me write it here. Our total cost is going to be equal to some constant of proportionality times our number of hours.

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