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Topic 2: Graphing 2-variable linear equations

Website Address:https://www.curriki.org/oer/Topic-2--Graphing-2-variable-linear-equations
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Jesse MercerGrymes Memorial SchoolOrange, Virginia, US,
June 10, 2009
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Type:

Lesson Plan

Description:

In this sub-unit, students are introduced to 2-variable linear equations. They learn to graph these equations usinig a variety of methods and to determine the equation of a line from its graph. The bulk of the concepts in this unit will be introduced through the vocabulary of the economics study in Topic 1 and practiced in the context of the students' business.

Subjects:

  • Mathematics > General
  • Mathematics > Algebra
  • Mathematics > Equations
  • Mathematics > Graphing
  • Mathematics > Problem Solving
  • Mathematics > Statistics

Education Levels:

  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10

Keywords:

Algebra Linear Equations Graphing Linear Regression

Language:

English

Access Privileges:

Members

License Deed:

Creative Commons Attribution 3.0

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None
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This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2009-07-08.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 3

Reviewer Comments:

This lesson on designing surveys as a prerequisite for linear regression falls far outside the usual topics in an algebra I class. When done, however, the students will have a realistic understanding of what’s required to establish pricing for a new good., ……………………………………………..………………………….…….…………….……………………………………….. This resource is part of a 8 week unit for an elementary Algebra class. The unit (Teaching Linear Equations through Running a Small Business ) covers linear equations, linear regression, and uses the simple economics of running a small business to illustrate the ideas. It requires the teacher to integrate the material with various skills, including use of the Internet and other technologies. It is an ambitious and ultimately rewarding undertaking.

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Table of Contents

Topic 2: Graphing 2-variable linear equations

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In this sub-unit, students are introduced to 2-variable linear equations. They learn to graph these equations usinig a variety of methods and to determine the equation of a line from its graph. The bulk of the concepts in this unit will be introduced through the vocabulary of the economics study in Topic 1 and practiced in the context of the students' business.

Introduction to 2-variable expressions

by Jesse Mercer
In this lesson, students are introduced to the concept of a 2-variable linear expression. They learn to create these expressions by defining two variables representing different kinds of quantities, and they learn to evaluate these expressions.
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Writing 2-variables equations

by Jesse Mercer
In this lesson, students will learn how to translate situations in real-life into 2-variable equations and generate different ordered pair solutions.
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On a scale of 0 to 3
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Graphing 2-variable equations using a table

by Jesse Mercer
This lesson introduces the notion of graphing 2-variable equations by making use of a function table. It uses examples from the format of the project in order to solidify the concepts of cost and revenue.
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Graphing -- using intercepts

by Jesse Mercer
This lesson focuses on using x- and y-intercepts to quickly graph equations. It also covers how to find intercepts Algebraically without reference to the graph.
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Understanding and Applying Slope

by Jesse Mercer
This lesson introduces the notion of slope through intuitive, geometric, and Algebraic means. This lesson may take 2 (or even 3) class periods to allow for full student comprehension, as slope is traditionally one of the most difficult-to-acquire concepts in the Algebra curriculum.
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'P' - This is a trusted Partner resource
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'P' - This is a trusted Partner resource

Graphing -- Using Slope-Intercept and Point-Slope Form

by Jesse Mercer
This lesson introduces students to the use of the "form equations" to be able to quickly graph a line given its equation in either slope-intercept or point-slope form.
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Applying Slope-Intercept Form -- Generating Equations from Data

by Jesse Mercer
This lesson uses the format of the business project to help students experience how to apply the concept of a linear equation to real-life situations. They will research cost information with their partners and turn this data into a cost-curve equation and graph.
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'NR' - This resource has not been rated
 NR
'NR' - This resource has not been rated

Finding an equation from a graph

by Jesse Mercer
This lesson focuses on "working backwards" from a given graph to derive its equation. This is a prerequisite skill for linear regression, which will be taught in the next sub-unit.
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Graphing Equations Using TI-82 or TI-83+ Calculators

by Jesse Mercer
This lesson is an introduction to the skill of using graphing calculators for their primary functionality: graphing. Students will be walked through the process of graphing and then be permitted to spend time exploring the technology. Finally, the technology will be applied to the project by using "screenshots" to capture the graph of their cost curve information.
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 3
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