Create equations that describe numbers or relationships
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Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions, and simple rational and exponential functions.
Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations.
Represent constraints by equations or inequalities, and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context.
Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales.