Chapter 6‎ > ‎

### 6.2 Solving System of Equations by Substitution

Standard(s):

• A.REI.C.6: Solve systems of linear equations exactly and approximately (e.g., with grap), focusing on pairs of linear equations in two variables.

Essential Question:

• How can I use Algebra to describe the relationship between sets of numbers?

• In what ways can the problem be solved, and why should one method be chosen over another?

Learning Target:

• I can write the system of equations that best models the problem.(Synthesis)

• I can interpret solutions in the context of the situation modeled and the scenario.(Evaluation)

• I can define systems of linear equations.(Knowledge)

• I can define solutions of systems of equations.(Knowledge)

• I can explain why some linear systems have no solutions.(Comprehension)

• I can identify linear systems with no solutions.(Comprehension)

• I can explain why some linear systems have infinite solutions.(Comprehension)

• I can identify linear systems with infinite solutions.(Comprehension)

• I can solve a system of linear equations algebraically to find an exact solution.(Application)

• I can explain that a point of intersection on the graph of a system of equations is the solution to both equations. (Comprehension)

• I can use function notation to show that when f(x)=y and g(x)=y that f(x)=g(x).(Application)

• I can explain that the value making f(x)=g(x) true is the x coordinate of the intersection point.(Comprehension)

Warm-Up:

Notes:

Click on the image below for the PDF of the notes 6.2 Solving System of Equations by Substitution

Video:

Click below for the Classroom Lesson -  6.2 Solving System of Equations by Substitution

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Activities:

Click on the image below for an activity -  Solving System of Equations by Substitution

Click on the image below for a Game - Solving System of Equations by Substitution

Assessment/Homework:
pg. 345 9-23 odd
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