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