In this interactive from APT, learn to transform linear equations into simpler forms to show whether the equation has one, infinitely many, or no solutions. In the accompanying classroom activity, students use the interactive and then write three equations: one with one solution, one with infinitely many, and one with no solutions. To get the most from this lesson, students should be comfortable using properties of operations to generate equivalent linear expressions and solving linear equations with one solution. This resource is part of the Math at the Core: Middle School Collection.

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