Solving Systems by Substitution?

Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.
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Postby stapel_eliz » Wed Jan 26, 2011 12:15 pm

Solve each system by substitution. Check your answer.
Each equation is solved for "y=". So the steps are:

Pick one of the equations, and plug what y equals into the other equation, in place of y. Solve the resulting linear equation for the value of y. Then plug this value back in to either of the original equations, and solve for the value of y.

If you get stuck, please reply showing how far you got in following these steps. Thank you! :wink:

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