Curriculum / Math / 9th Grade / Unit 3: Linear Expressions & Single-Variable Equations/Inequalities / Lesson 9

Linear Expressions & Single-Variable Equations/Inequalities

Lesson 9

Math

Unit 3

9th Grade

Lesson 9 of 12

Objective

Model a contextual situation and make an informed decision based on the model.

Lesson Map

Topic A: Properties and Solutions of Single-Variable Linear Expressions and Equations

Lesson

Identify properties of operations that result in equivalent linear expressions.

Standards

A.REI.A.1A.SSE.A.1A.SSE.A.2

Lesson

Use properties of equations to analyze and write equivalent equations.

Standards

A.REI.A.1

Lesson

Solve single-variable linear equations using properties of equality.

Standards

A.REI.A.1A.REI.B.3

Lesson

Solve equations with a variable in the denominator.

Standards

A.REI.B.3F.IF.A.1

Lesson

Solve for a variable in an equation or formula.

Standards

A.CED.A.4

Topic B: Modeling with Single-Variable Linear Equations

Lesson

Write equations using defined variables to represent a contextual situation.

Standards

A.CED.A.2A.CED.A.4F.BF.A.1F.IF.B.5N.Q.A.1

Lesson

Define variables; write and solve equations to represent a contextual situation.

Standards

A.CED.A.1A.CED.A.2A.CED.A.4F.BF.A.1F.IF.B.5N.Q.A.1

Lesson

Write and solve equations to represent contextual situations where estimations and unit conversions are required.

Standards

A.CED.A.1A.CED.A.2A.CED.A.4F.BF.A.1F.IF.B.5N.Q.A.1

Lesson

2 days

Model a contextual situation and make an informed decision based on the model.

Standards

A.CED.A.1A.CED.A.2A.CED.A.4F.BF.A.1F.IF.B.5N.Q.A.1

Topic C: Properties and Solutions of Single-Variable Linear Inequalities

Lesson

Solve unbounded single-variable inequalities in contextual and non-contextual situations.

Standards

A.CED.A.3A.REI.A.1A.REI.B.3A.SSE.B.3

Lesson

Write and graph compound single-variable inequalities to describe the solution to contextual and non-contextual situations.

Standards

A.CED.A.3A.REI.B.3

Lesson

Solve and graph compound inequalities where algebraic manipulation is necessary in contextual and non-contextual situations.

Standards

A.CED.A.3A.REI.A.1A.REI.B.3

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