100 likes | 359 Views
4.6 Cramer’s Rule. 1. System of 2 Equations. 2. System of 3 Equations. 3. Practice Problems. Cramer’s Rule. Remember how much fun it was to solve systems of equations by: Substitution? Elimination? Cramer’s Rule is a third method. Systems of 2 Equations. 2 Equation Example.
E N D
4.6 Cramer’s Rule 1 System of 2 Equations 2 System of 3 Equations 3 Practice Problems
Cramer’s Rule • Remember how much fun it was to solve systems of equations by: • Substitution? • Elimination? • Cramer’s Rule is a third method
2 Equation Example Use Cramer’s Rule to solve the system of equations Cramer’s Rule: so…
2 Equation example (Cont.) Evaluate each determinant Simplify Solution Set: (4, -1)
Practice Problems • Page 192 Problems 4-9, 12-19, 26-29