| addition method | Eliminating a variable by adding two equations.
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| augmented matrix | A matrix containing the coefficients and constants of a system of equations.
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| dependent system | A linear system in two variable for which the graphs coincide.
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| determinant | A number corresponding to a square matrix.
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| inconsistent system | A system with no solution.
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| independent linear system | A linear system with exactly one solution.
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| linear equation in three variables | An equation of the form Ax + By + Cz = 0 with A, B, and C all not equal to zero.
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| linear inequality in two variables | An inequality of the form Ax + By ≥ C (or with another symbol of inequality).
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| matrix | A rectangular array or arrangement of terms or numbers written between brackets.
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| order | The number of rows and columns in a matrix.
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| substitution method | A method of eliminating a variable by substituting one equation into the other.
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| system of equations | Two or more equations.
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| system of linear equations | A group of two or more linear equations.
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2002 McGraw-Hill Higher Education