| A | B |
| Variable | a placeholder in an algebraic expression. |
| Variable expression | a mathematical phrase that uses variables, numerals, and operations. |
| absolute value | a number's distance from 0 on a number line |
| conjecture | A conclusion by inductive reasoning. |
| coordinate plane | The graph created by the intersection of 2 number lines. |
| counterexample | An example that proves a statement is false. |
| evaluate | to replace a variable with a number and then simplify using PEMDAS. |
| integers | Whole numbers and their opposites, including zero. |
| inductive reasoning | Making conclusions based on patterns you observe. |
| opposites | Numbers that are the same distance from zero on a number line. |
| order of operations | () exponents x รท(whichever comes first) + - (whichever comes first |
| ordered pair | a pair of numbers that give the location of a point on coordinate plane; (2,4) |
| origin | The point where the x- and y-axis intersect; 0 |
| quadrant | One of the 4 sections of a coordinate plane. |
| x-axis | The horizontal numberline on a coordinate plane. |
| y-axis | The vertical numberline on a coordinate plane. |
| x-coordinate | Shows the position left or right of the y-axis. |
| y-coordinate | Shows the position above or below the x-axis. |
| simplify a numerical expression | To replace the expression with the simplest name for its value. |
| simplify a variable expression | To replace the expression with an equivalent expression with fewer terms. |