Real Number System

5. is statements relating algebraic expressions using < or > or ≤ or ≥, ≠
11. a special notation that uses parentheses ( ) and/or brackets [ ] to describe an interval on a number line.
14. are either a single number or variable, or numbers and variables multiplied together and they are separated by + or − signs.
16. Polynomial It is customary to write the terms of a polynomial in the order of descending powers of the variable.
17. is an equation with no solution.
18. Solution Set = empty set = ∅ empty set, "{ }," or ∅ or "phi"
19. is any number divided by 0 because dividing by zero is undefined.
20. is a portion on a number line or what is between two points or values.
21. is an angle that measures 180.
22. 2 terms, For example, 2x+1
23. are two angles whose measure has a sum of 180.
24. is a statement that two ratios are equal. Example (a/b)=(c/d).

1. is the set of all solutions of an equation. { }
2. angles are two angles whose measure has a sum of 90.
3. that have exactly the same solution sets. For example, 2x=10 → x=5
4. is an equation in which variables are used to describe a relationship.
6. is an equation that is true for all values of the variable.
7. angles are an angle that measures 90.
8. is a comparison of two quantities using a quotient (a/b) or (a:b) or (a to b)
9. can have constants, variables, and exponents, but never division by a variable.
10. is an equation that is true for some values of the variable and false for others.
12. are angles formed by intersecting lines and they have the same measures.
13. 3 terms, For example, 2x+y+1
15. 1 term, For example, 2
17. are two integers that differ by 1.