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3.1-3.5 AlgebraIIHon
Systems of equations and inequalities
| Question | Answer |
|---|---|
| System of Equations | Two or more equations with the same variable. |
| Consistent | A system of equations that has at least one solution. |
| Inconsistent | A system of equations that has no solution. |
| Independent | A system of equations that is consistent and has one solution. |
| Dependent | A system of equations that is consistent and has an infinite number of solutions. |
| Substitution Method | An algebraic method in which one equation is solved for one variable in terms of the other. Then, this expression is substituted for the variable in the other equation. |
| Elimination Method | An algebraic method in which one of the variables is eliminated by adding or subtracting the equations. When the two true equations are added, the result is a new equation that is also true. |
| System of Inequalities | A set of inequalities with the same variables. |
| Constraints | Inequalities |
| Feasible Region | The intersection of the graphs. |
| Bounded | When the graph of a system of constraints is a polygonal region. |
| Vertices | Where the maximum or minimum value of a related function occurs at the feasible region. |
| Linear Programming | The process of finding maximum or minimum values of a function for a region defined by inequalities. |
| Ordered Triple | The solution of a system of equations in three variables x, y, and z and is written (x,y,z) |
| Unbounded | When a system of inequalities forms a region that is open. |
| Octants | Planes that intersect at right angles and divide space into eight regions. |
| Ordered Triple | A point in space (three dimensions) that has three coordinates and is represented by (x,y,z). |