| A | B |
|---|
| union | the combined set of elements from two sets with no duplication of elements. |
| objective | to use intersections and union to simplify problems involving sets. |
| intersection | the elements which are common to both sets |
| domain | solution to an open sentence |
| set | a collection of objectives called elements. |
| real solution | if any number line satisfies one or the other inequality, the answer is all real solutions. |
| variable | it represents an unknown value. |
| open sentence | a solution and it can be solved. |
| absolute value | it is equal to the distance from zero |
| variable | it represents an unkown substance or taking place for a number |
