QR.M.4
Analyze real-world problem situations and use variables to construct and solve equations involving one or more unknown or variable quantities to answer questions about the situations, such as creating spreadsheet formulas to calculate prices based on percentage mark-up or solving formulas for specified values. Demonstrate understanding of the meaning of a solution. Identify when there is insufficient information given to solve a problem.
Example Problems
Evaluate the expression:
when and
when and
Evaluate the expression:
when and
when and
Evaluate the expression:
when and
when and
Khan Academy ResourcesEvaluate functionsEvaluate function expressionsGraphs of inequalitiesSystems of inequalities graphsEvaluate functions from their graphEvaluate step functionsSolutions of inequalities: algebraicEvaluate inverse functionsSolutions of systems of inequalitiesEvaluate piecewise functionsSystems of inequalities word problemsWhy all the letters in algebra?Testing solutions to inequalities Testing solutions to systems of inequalitiesWorked example: evaluating expressions with function notationEvaluating discrete functionsWorked example: evaluating piecewise functionsLinear equation word problems

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