Notes: 2-1 and 2-2 Solving a system of 2 equations:

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Presentation transcript:

Notes: 2-1 and 2-2 Solving a system of 2 equations: **Elimination/addition method **Substitution method **Solution = ordered pair (x, y) = point of intersection 1

Solving a system of 3 equations: 1st Eliminate the same variable using two equations at a time. 2nd Solve the resulting system of 2 equations. 3rd Substitute back into previous equations to find other variables. **Solution = ordered triple (x, y, z) = point of intersection 2

p.76 #8 x + 2y + 3z = 5 3x + 2y – 2z = -13 5x + 3y – z = -11 3