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# Systems of Linear Equations in Two Variables

## Solving for two variables using elimination.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## Linear System Fundamentals - Overview

by CK-12 //basic
Overview
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• Video

## Rewriting Formulas - Overview

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• Video

## Rewriting Linear Equations - Overview

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Overview
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• Video

## Solving Word Problems by Rewriting Formulas and Equations - Overview

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Overview
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• Video

## Using Formulas to Solve Problems - Overview

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Overview
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• Video

## Linear System Fundamentals - Example 1

by CK-12 //basic
Determining the Correct Ordered Pair as a Solution Given the Graph of a Linear System
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• Video

## Linear System Fundamentals - Example 2

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Testing Ordered Pairs as Solutions to Linear Systems
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• Video

## Rewriting Formulas - Example 1

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Rewriting and Solving a Formula with Two Variables
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• Video

## Rewriting Formulas - Example 2

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Rewriting and Solving a Formula with Three Variables
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• Video

## Rewriting Linear Equations - Example 1

by CK-12 //basic
Solving Linear Equations for the Y-Variable
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• Video

## Rewriting Linear Equations - Example 2

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Solving and Evaluating Linear Equations for the Y-Variable
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• Video

## Solving Word Problems by Rewriting Formulas and Equations - Example 1

by CK-12 //basic
Solving Word Problems by Rewriting Formulas
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• Video

## Solving Word Problems by Rewriting Formulas and Equations - Example 2

by CK-12 //basic
Solving Word Problems by Rewriting Equations
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2
• Video

## Using Formulas to Solve Problems - Example 1

by CK-12 //basic
Using the Distance Formula (d = rt) to Solve Problems
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• Video

## Using Formulas to Solve Problems - Example 2

by CK-12 //basic
Using Perimeter Formulas to Solve Geometric Problems
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