Warm-up. Systems of Equations: Substitution Solving by Substitution 1)Solve one of the equations for a variable. 2)Substitute the expression from step.

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Presentation transcript:

Warm-up

Systems of Equations: Substitution

Solving by Substitution 1)Solve one of the equations for a variable. 2)Substitute the expression from step 1 into the other equation. 3)Solve the new equation. 4)Substitute the value found in step 3 into either equation containing both variables. 5)Check the proposed solution in the original equations.

Solve by Substitution

Warm-Up

Day 2: Substitution Solving for a variable first

Solving by Substitution 1)Solve one of the equations for a variable. 2)Substitute the expression from step 1 into the other equation. 3)Solve the new equation. 4)Substitute the value found in step 3 into either equation containing both variables. 5)Check the proposed solution in the original equations.

Solve by Substitution