← TMS Pre Algebra-Ch. 8 Vocab Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All domain The set of the first coordinates of the ordered pairs of a relation. function a relationship in which each member of the domain is paired with exactly one member of the range. range The set of the second coordinates of the ordered pair of a relation. linear equation Any equation whose graph is a line slope The ratio that describes the tilt of a line. y-intercept where the line crosses the y-axis slope intercept form y = mx + b, where m is the slope and b is the y-intercept of the line. system of equations two or more linear equations. x-axis The horizontal number line that, together with the y-axis, establishes the coordinate plane. ordered pair a pair of numbers that gives the location of a point in a coordinate plane.