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Warm Up
1. The graph of a _________________ equation is a straight
line.
2. Simplify
3. Simplify
4. Simplify
5. Simplify
Lesson 63: Solving Systems of Linear Equations by EliminationExpressions and Equations
Elimination• Sometimes it’s not practical to use substitution to solve a
system of equations (recall practice d from Lesson 59)
• Sometimes it’s easier to eliminate one of the variables by combining the two equations using addition or subtraction.
ExampleSolve by elimination:
ExampleSolve by elimination:
ExampleSolve by elimination:
ExampleA movie theater sells 540 tickets to a matinee showing of a new animated feature. A child matinee ticket costs $5.50 and an adult matinee ticket costs $6.00. If the movie theater made $3060 for that showing, how many adult tickets were sold?
Homework Questions
Homework Questions
Correcting Homework• Be kind.
• If the paper in front of you has no work shown, return it to its owner.
• If the paper in front of you is not in pencil or black ink, return it to its owner.
• If the paper in front of you is not complete, return it to its owner.
• Remember you are filling out the score sheet for the person that you are correcting.
• Be sure to write “C.B. ____________” with your name on the paper you graded and on the score sheet.
Homework• 1st and 2nd hour: Lesson 63 #4-7, 11-13, 16-18, 21-23, 25, 27-
28, 30, Practice a-e
• 3rd hour: 7, 11-13, 16-18, 27-28, 30, Practice a-e