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Notes from last time: **Still being updated!**
I solved a linear system by graphing, and another system by the method of substitution and then by the method of elimination (in two ways). You must know these methods very thoroughly and be able to use them both.
• Active learning practice solving a system of 2 linear equations in 2 variables by substitution and elimination
• Solving a system of 3 linear equations in 3 variables (active learning with outline notes)
The two outline notes pages which I handed out in class are also available here:
There is a very nice video explaining this method at Patrick’s Just Math Tutorials. He explains the reasoning along the way.
There is a longer video explanation of the method along with background information about 3 by 3 systems at Khan Academy.
Make sure to answer (in your notebook) the Questions that go with the Lines Lab assignment.
