(C) Determine the constant of proportionality (k = y/x) within mathematical and real-world problems
(Y8) Solve a range of problems involving rates and ratios, with and without digital technologies (ACMNA188)
7.RP.2.A Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
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