| A | B |
| the distance that a number is from zero on the number line | absolute value |
| a number sequence formed by adding a fixed number to each previous term | arithmetic sequence |
| the fixed number added to each tyerm of an arithmetic sequence | common difference |
| two inequalities that are joined by "and" or "or" | compound inequality |
| the nonzero constant k in the function y = kx | constant of variation |
| the possible values for the input, or the independent variable, of a funtion | domain |
| a linear function that can be expressed in the form y = kx | direct variation |
| a relation that assigns exactly one value in the range to each value in the domain | function |
| a function that can be written in the form xy = k, or y = k/x | inverse variation |
| two lines in the same plane that never intersect | parallel lines |
| the ratio of the amount of change to the original amount expressed as a percent | percent of change |
| lines that intersect to form right angles | perpendicular lines |
| a linear equation of a nonvertical line written as y - y1 = m(x - x1) | point-slope form |
| an equation that states that two ratios are equal | proportions |
| also known as slope; change in the dependent variable/change in the independent variable | rate of change |
| the difference between the greatest and the least data values for a set of data | range |
| a ratio of a to b where a and b represent quantities measured in different units | ratio |
| figures that have the same shape, but not necessarily the same size | similar figures |
| the ratio of the vertical change to the horizontal change | slope |
| a linear equation of a nonvertical ine written as y = mx + b, where m is the slope and b is the y - intercept | slope-intercept form |
| the form of a linear equation Ax + By = C | standard form |
| two or more linear equations using the same variable | systems of linear equations |
| a method used to determine if a relation is a funtion or not | vertical line test |