Algebra 1

2. two numbers whose product is 1
3. a number that has no factor but 1 and itself
6. a mathematical sentence with an equal sign
7. to write an expression in a simpler form
10. a mathematical phrase that contains operations, numbers, and/or variables
12. a statement that solves a problem or explains how to solve the problem
13. Whole numbers and their opposites
16. The middle number in a set of numbers that are listed in order
17. A statement that compares two quantities using <, >, ≤,≥, or ≠
18. an average of n numbers computed by adding some function of the numbers and dividing by some function of n
19. a number, a variable, or the product of a number and a variable

1. the four regions into which the x-axis and the y-axis that separate the coordinate plane.
4. a quantity that does not vary
5. two numbers that are the same distance from zero on a number line, but are in opposite directions
8. An equation that is true for every value of the variable
9. The numerical factor when a term has a variable
10. a mathematical notation indicating the number of times a quantity is multiplied by itself
11. the number or expression that is used as a factor in a repeated multiplication
14. substituting a given number for each variable
15. a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity