Algebra terms

4. A proposition or supposition developed to provide a basis for further investigation or research.
6. A mathematical sequence in which two expressions are connected by an equality symbol.
7. The way in which three or more numbers are grouped for addition or multiplication does not change their sum or product (e.g., 2 + 3 = 3 +2 or 4 x 7 = 7 x 4).
8. A mathematical sentence (e.g., 2x = 10) that equates one expression (2x) to another expression (10).
9. The middle point of a set of ordered numbers where half are below it.
13. Numbers that correspond to points on a graph in the form (x , y).
14. A real number that can not be expressed as a ratio of two numbers (e.g., 20=2(w+4) + 2w and y = 3x + 4).
15. The point at which two lines meet.
16. The horizontal and vertical number lines used in a rectangular graph or coordinate grid system.
18. The arithmetic average of a set of ordered numbers where half of the numbers are above the median and half are below it.
19. Any part of a whole is called a fraction (e.g., one-half written in fractional form is 1/2.
20. A one-dimensional measure that is the measurable property of line segments,
21. A mathematical sentence in which two expressions are connected by an equality symbol.

1. The relationship between two sets (e.g., sets of numbers) in which each element of one set has one assigned element in the other set
2. A number's distance from zero (0) on a number line. The absolute value of both 4, written |4|, and negative 4, written |-4|, equals 4.
3. The perimeter of a circle is called its circumference.
5. An algebraic equation in which the variable quantify or quantities are in the first power and the graph is a straight line (e.g., 20 = 2(w + 4) + 2w and y = 3x + 4).
10. The numbers in the set {...,-4, -3, -2, -1, 0, 1, 2, 3, 4,...}.
11. A collection of numbers, symbols, and/or operation signs that stands for a number.
12. The value of a variable when all other variables in the equation equal zero (0). On a graph, the values where a function crosses the axes.
17. A sentence that states one expression is greater than or equal to, less than, less than or equal to another expression (e.g., a does not = 5 or x < 7 ).