1. CHAPTER 3 LINEAR SYSTEMS
3.5 Systems with three variables
Part 1 - elimination

2. Page 164
GRAPHS IN THREE DIMENSIONS
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4. Page 166
SYSTEMS WITH THREE VARIABLES
 We can represent three relationships involving
three unknowns with a system of equations.
 We can represent systems of equations in three
variables as graphs in three dimensions – the
solutions of a three variable system can be shown
as the intersection of planes

6. SOLVING SYSTEMS WITH THREE VARIABLES
BY ELIMINATION
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7. EXAMPLE: SOLVE BY ELIMINATION
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8. EXAMPLE: SOLVE BY ELIMINATION
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9. EXAMPLE: SOLVE BY ELIMINATION
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10. EXAMPLE: SOLVE BY ELIMINATION
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11. ASSIGNMENT
 Page 171 #8, 9 – 19 odd

12. CHAPTER 3 LINEAR SYSTEMS
3.5 Systems with three variables
Part 2 - subsitution

13. SOLVING SYSTEMS WITH THREE VARIABLES
BY SUBSTITUTION
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14. EXAMPLE: SOLVE BY SUBSTITUTION
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15. EXAMPLE: SOLVE BY SUBSTITUTION


16. EXAMPLE: SOLVE BY SUBSTITUTION
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17. ASSIGNMENT
 Page 172
 #21 – 29 odd, 33, 36, 39