NC.7.RP.2 - Recognize and represent proportional relationships between quantities. a. Understand that a proportion is a relationship of equality between ratios. Represent proportional relationships using tables and graphs. Recognize whether ratios are in a proportional relationship using tables and graphs. Compare two different proportional relationships using tables, graphs, equations, and verbal descriptions. a. Identify the unit rate (constant of proportionality) within two quantities in a proportional relationship using tables, graphs, equations, and verbal descriptions. b. Create equations and graphs to represent proportional relationships. c. Use a graphical representation of a proportional relationship in context to: Explain the meaning of any point (__, __). Explain the meaning of (0, 0) and why it is included. Understand that the __-coordinate of the ordered pair (1, __) corresponds to the unit rate and explain its meaning.

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