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Grade 7 - Algebraic Reasoning & Algebra
Standard 7.A.1.1 - Interpret a word problem to find the related linear equation with an intercept.
Describe that the relationship between two variables, x and y, is proportional if it can be expressed in the form y/x = kx; distinguish proportional relationships from other relationships, including inversely proportional relationships (xy = k or y = k/x).