7.RP.A.2. Recognize and represent proportional relationships between quantities. 7.RP.A.2a. 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. This Representing Proportional Relationships with Equations Lesson Plan is suitable for 7th Grade. Use the constant of proportionality to relate the independent variable to the dependent variable. The eighth installment of a 22-part series instructs pupils to take the equation to find the constant of proportionality and use it to write the equation using a multiplicity factor.
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