Matching Pairs Unit one vocabularyOnline version Unit one vocabulary by Carla Lilly 1 Relation 2 Function 3 x-intercept 4 Parent function 5 Domain 6 y-intercept 7 Function notation 8 Range 9 Family of functions 10 Inverse function The point at which the line crosses the x axis (x, 0). The set of all x coordinates of the set of ordered pairs in a relation. A function that reverses another function. If you have (a,b) then the inverse of that would be (b,a). A method of writing algebraic variables as functions of other variables. A set of input and output values, usually represented in the form of ordered pairs. The set of all y coordinates in the ordered pairs in a relation. A set of functions defined by the same type of formula A relation in which each element is paired with exactly one element of the range. Is the point at which the line crosses the y axis (0,y). The simplest function in a family of functions.