How to check the solution of a linear system of three equations and three unknowns. Substitute the coordinates into all 3 of the equations to see if they satisfy them or not. To be a solution it must satisfy ALL three linear equations.
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Chapter 4 - Solving Linear Systems
4.1 Solving Linear Systems by Graphing
4.2 Solving Linear Systems by Substitution
4.3 Solving Linear Systems by Elimination
4.4 Applications of Linear Systems
4.5 Solving Systems of Linear Inequalities (Two Variables)
4.6 Review Exercises and Sample Exam
