Solving Systems of Linear Equations

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Presentation transcript:

Solving Systems of Linear Equations 10-22-08 IMP3 Ms. Sia

Today’s Agenda Bell ringer Report out sheets Get the Point p. 42

Announcements Last day I’ll accept extra credit is Friday, October 31st HW Hall today and tomorrow until 4:30pm ACT math session tomorrow during 8th and 9th periods in the library

Report Out sheets

Get the Point p. 42 System of linear equations: a set of two or more linear equations with common solutions We already know TWO methods: Guess and check Graphing Today, we’re learning the substitution method.

Substitution Solve one of the equations for a variable. Plug your resulting expression into that variable in the other equation. Solve that other equations for the other variable. Plug that value into either equation and solve to get the value of the other variable.

Example

Tonight’s HW HW16 p. 47 and HW17 p. 48 are due Monday, October 27th