| coefficient | a number that multiplies a variable |
| quadratic equation | an equation that can be written in the form ax2 + bx + c = 0 where a ยน 0. When written as y = ax2 + bx + c the expression becomes a quadratic function. |
| root of an equation | any number that makes the equation true when the variable is equal to that number. That is, a solution of the equation. |
| Zero Product Property | states that if ab = 0, then either a = 0 or b = 0, or both a and b are 0 |