Solve Systems by Substitution

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What is a system of equations?

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A set of two or more equations with the same variables that are solved together.

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What does it mean to solve a system by substitution?

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It involves solving one equation for one variable and substituting that expression into the other equation.

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What is the first step in solving a system by substitution?

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Make sure at least one equation is solved for one variable.

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How do you check if a solution is correct for a system of equations?

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Substitute the solution back into both original equations to see if they hold true.

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What is the slope-intercept form of a linear equation?

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What is the standard form of a linear equation?

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