Solve the linear system.

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Presentation transcript:

Solve the linear system. Elimination Method: Solve the linear system. -8x + 3y=12 8x - 9y=12

Solve the linear system. Solution: ( , ) Add the two equations together so that one variable is ELIMINATED. Do you have inverse or identical terms? + 3y=12 - 9y=12 Inverse terms: Add -8x + Yes! Inverse terms 8x Now, solve for the remaining variable. -6y = 24 -6 -4 -4 y = Now what?

Solve the linear system. Elimination Method: Solve the linear system. Solution: ( , -4 ) -4 Substitute value into one of the original equations. -8x + 3y=12 8x - 9y=12 ( ) -8 x + 3 =12 y Solve. -8 x + -12 =12 +12 -8 x =24 -8 -3 -3 x =

Solve the linear system. Elimination Method: Solve the linear system. Solution: ( -3 , -4 ) -3 -4 Check!!!!! -8x + 3y=12 8x - 9y=12 ( ) 8 - 9 x y =12 -24 + 36 =12 12 =12