| Term | Definition |
| cartesian products | 2 sets A and B, symbolized by AxB, is the set of all ordered pairs having the first number from set A and the second number from set B |
| relation | a set of ordered pairs |
| domain | the set of all first numbers (x-coordinates) |
| range | the set of all second numbers (y-coordinates) |
| function | a relation in which every member of the domain is mapped to 1 and only 1 member of the range |
| linear equation | no products of variables, all variables are to the 1st power, no variables in the denominator |
| vertical line equations | x=.... |
| horizontal line equations | y=.... |
| point-slope for of a line | y-y1=m(x-x1) |
| standard form | Ax+By+C=0 |
| parallel lines | have the same slope, different y-intercepts |
| perpendicular lines | product of the slopes is -1 (one slope is the negative reciprocal of the other) |