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Unit 5: Systems of Equations

Solving by Graphing:

Big Ideas: Pg. 239 #3-22
Khan Academy: This site has a great series about solving systems of equations by graphing, substitution, and elimination.

Systems of equations with graphingWalk through examples of solving systems of equations by finding the point of intersection.

Solving By Substitution:

Big Ideas: Pg.245 #3-18
Khan Academy: This site has a great series about solving systems of equations by graphing, substitution, and elimination.

Systems of equations with substitution: 2y=x+7 & x=y-4Learn to use substitution to solve the system of equations 2y = x + 7 and x = y - 4.

Solving Special Systems:

Big Ideas: Pg. 257 #3-16
Khan Academy: This site has a great series about solving systems of equations by graphing, substitution, and elimination.

Systems of equations number of solutions: fruit prices (1 of 2)Sal gives an example of a system of equations that has no solution!

Solving by Elimination:

Big Ideas: Pg. 251 #3-20
Khan Academy: This site has a great series about solving systems of equations by graphing, substitution, and elimination.

Systems of equations with elimination: King's cupcakesSal uses simple elimination to figure out how many cupcakes are eaten by children and adults.

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