Algebra 2: Resources and Extra Practice - 6.01 Solving Systems of Equations Algebraically

Algebra 2: Resources and Extra Practice

6.01 Solving Systems of Equations Algebraically

Essential Question:

What methods can be used to solve a system of equations?
What type of solutions do the methods for solving systems of equations find?

Lesson 6.01 Video - If the video does not load correctly, Click Here to watch.

Khan Academy Resources

Solving systems of equations by elimination (old)An old video where Sal introduces the elimination method for systems of linear equations.

Systems of equations with elimination (and manipulation)In some cases, we need to slightly manipulate a system of equations before we can solve it using the elimination method. See how it's done in this video.

Systems of equations with substitution: y=-1/4x+100 & y=-1/4x+120Learn to solve the system of equations y = -1/4x + 100 and y = -1/4x + 120 using substitution.

Systems of equations with substitution: potato chipsTo solve a system of equations using substitution... 1. Isolate one of the variables in one of the equations, e.g. rewrite 2x+y=3 as y=3-2x. 2. You can now express the isolated variable using the other one. *Substitute* that expression into the second equation, e.g. rewrite x+2y=5 as x+2(3-2x)=5. 3. Now you have an equation with one variable! Solve it, and use what you got to find the other variable.

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