Can you solve an equation graphically? Absolutely! This Algebra II lesson makes the connection between solving an absolute value equation and graphing two functions. Graphing absolute value functions is presented through the process of transformations of the parent function. Solving absolute value equations is explored as graphing a system of two functions and finding the intersections.

Concepts

absolute value equations, absolute value functions, absolute value inequalities, graphing equations, graphing functions

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Additional Tags

math

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Instructional Ideas

• Set up classroom in order to facilitate working in pairs

Classroom Considerations

• Blackline masters on page 13 need to be copied onto transparencies and cut out prior to instruction

Pros

• Warm-up exercises are based on prerequisite skills
• Transparencies are provided in order to help with graphing and to make predictions of solutions of equations

Cons

• Independent practice worksheet does not include solutions

Common Core

HSA-REI.D.11 HSF-IF.C.7.b HSF-BF.B.3