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Elementary Algebra 2e

# Key Terms

### Key Terms

coincident lines
Coincident lines are lines that have the same slope and same y-intercept.
complementary angles
Two angles are complementary if the sum of the measures of their angles is 90 degrees.
consistent system
A consistent system of equations is a system of equations with at least one solution.
dependent equations
Two equations are dependent if all the solutions of one equation are also solutions of the other equation.
inconsistent system
An inconsistent system of equations is a system of equations with no solution.
independent equations
Two equations are independent if they have different solutions.
solutions of a system of equations
Solutions of a system of equations are the values of the variables that make all the equations true. A solution of a system of two linear equations is represented by an ordered pair (x, y).
supplementary angles
Two angles are supplementary if the sum of the measures of their angles is 180 degrees.
system of linear equations
When two or more linear equations are grouped together, they form a system of linear equations.
system of linear inequalities
Two or more linear inequalities grouped together form a system of linear inequalities.
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