Wednesday, February 4, 2015

7.4 Solve Word Problems with Systems of Linear Equations by Multiplying & Eliminating

Since most people do not get paid simply for solving systems of linear equations, we will now practice the algebraic work we have done multiplying and eliminating with word problems.

Accordingly we will use grids to help us disaggregate the data we find in the word problems, translate the words into algebraic equations and then solve using appropriate steps to eliminate variables.

Start by practicing elimination with multiplication:

HW: pg 402 #s 20, 21, 22

Then, follow my lead by taking notes while you watch me solve #33 of your HW.

HW: pg 402-3 #s 33*, 34, 35, 39** (grid, equations & solve by elimination) 

**For number 39, be sure to graph your answer as well.

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