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Warm-Up Solve the system by substitution.
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Notes Solving a System of Equations by Substitution
1. Solve one of the equations for x or y. - Get x or y by itself. 2. Substitute your new expression from Step 1 into the other equation and solve for the variable. 3. Plug that solved variable into the other equation from Step 1 and solve for the other variable. 4. Check your answers by plugging it into the original equations.
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Notes Solve the system by substitution. Ex. 1) Solve for x or y.
Step 3 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer!
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Notes Solve the system by substitution. Ex. 1) Solve for x or y.
Now you try. Solve the system by substitution. Ex. 1) Solve for x or y. Step 3 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer!
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Notes Solve the system by substitution. Ex. 1) Solve for x or y.
Step 3 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer!
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Notes Solve the system by substitution. Ex. 1) Solve for x or y.
Now you try. Solve the system by substitution. Ex. 1) Solve for x or y. Step 3 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer!
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Class Work Solve the system by substitution.
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