Algebra crossword

3. The horizontal line on a graph
4. the middle number in a sorted list of numbers
8. a system for telling where points are.
9. consists of two expressions separated by an equal sign
11. a number which produces a specified quantity when multiplied by itself.
14. the sum of the values in a set of numbers, divided by the number of values in a set
16. a symbol that is assigned to an unknown value
17. an expression or a rule that defines the relationship between a value in a data set and a value in a different data set.
19. a part of a whole or, more generally, any number of equal parts
20. a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.

1. indicates how many times a number, or algebraic expression, should be multiplied by itself
2. a mathematical phrase made up of various numbers and symbols that represents a value
5. the numerical value of a number without its plus or minus sign
6. terms that have the same variable and power. Literal Equation
7. combination of variables and numbers using arithmetic
10. two expressions that are not equal.
12. The vertical line on a graph
13. an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable
15. an algebraic expression consisting of one term
18. a pictorial representation or a diagram that represents data or values in an organized manner