Solving Systems of Equations by Graphing
Tuesday, January 8, 2013
Solving Systems of Equations by Graphing
A “system” of equations is _____________________________________.
The system can be solved by graphing the lines.
|Solutions |Graphing |Substitution |Elimination |Terminology |
| | | | | |
|(x,y) | |(x,y) |(x,y) |Independent |
| | | | | |
|[pic] | | | | |
| | |False Stmt. |False stmt. |Inconsistent |
|Infinitely many | | | | |
| | |True Stmt. |True Stmt. |Dependent |
Examples: Solve each system by graphing and check by plugging your solution into each equation.
1) [pic] 2) [pic]
Solution: ________ Solution: ________
System is __________________ System is ___________
3) [pic] 4) [pic]
Solution: ________ Solution: ________
System is __________________ System is ___________
5) [pic] 6) [pic]
Solution: ________ Solution: ________
System is __________________ System is ___________
A.59 p. 118 #1-4, 27-29, 33, 36 (sketch the graph given and state solution)
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x
y
x
y
x
y
x
y
x
y
x
y
................
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