algebra 1

2. a number that has no factor but itself and 1
8. A ratio that compares two quantities measured in different units
9. the set of first coordinates of the ordered pairs of a relation.
10. a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
13. a relation where each number in the domain is paired with exactly one number in the range
15. adding the opposite
16. The middle number in a set of numbers that are listed in order
17. The number that occurs most often in a set of data
19. two numbers whose product is 1
20. The numerical factor when a term has a variable

1. a quantity that does not vary
3. an average of n numbers computed by adding some function of the numbers and dividing by some function of n
4. A statement that compares two quantities using <, >, ≤,≥, or =
5. the four regions into which the x-axis and the y-axis that separate the coordinate plane.
6. the steepness of a line
7. Numbers that are multiplied together to get a product
11. a mathematical sentence with an equal sign
12. y values
14. Whole numbers and their opposites
18. The difference between the highest and lowest scores in a set of data