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To find the constant of proportionality using a graph, identify two points on the line that represents the proportional relationship. Calculate the ratio of the values of the dependent variable (y) to the independent variable (x) at these points, which is given by the formula ( k = \frac{y}{x} ). This ratio remains constant for all points on the line, representing the constant of proportionality. If the graph passes through the origin, the slope of the line also represents this constant.

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2d ago

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