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This Every Line is a Graph of a Linear Equation lesson plan also includes:
- Every Line is a Graph of a Linear Equation - Teacher Version (doc)
- Every Line is a Graph of a Linear Equation - Student Version (pdf)
- Every Line is a Graph of a Linear Equation - Student Version (doc)
- Grade 8 Module 4: Teacher Materials
- Grade 8 Module 4: Student Materials
- Grade 8 Module 4: Copy Ready Materials
- Math Fluency Support for Grades 6-8
- Answer Key
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Challenge the class to determine the equation of a line. The 21st part in a 33-part series begins with a proof that every line is a graph of a linear equation. Pupils use that information to find the slope-intercept form of the equation of linear graphs by determining the slope and the y-intercept. Class members then convert the equation into standard form.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Create a matching activity with equations written in slope-intercept form, standard form and their corresponding graphs
- Lead a discussion on how to come up with equations
Classroom Considerations
- Opening proof is optional
- The lesson does not really match the standard because the standard is about proportional relationships; a better match may be 8.F.B.4
Pros
- The answer key shows the steps used to transform the equations from slope-intercept to standard form
- Highlights the mathematical practice location in the lesson plan
Cons
- The key to exercise three has a line after the solution that is not needed