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12 Nov 2018 In this section we will formally define relations and functions. We also give a “working definition” of a function to help understand just what a Discusses the concept of functions versus relations, and demonstrates ways of telling the difference. Covers the Vertical Line Test, along with how to know if a3 Jul 2011 A relation is a set of ordered pairs where the first components of the ordered pairs are the input values and the second components are the output values. A function is a relation that assigns to each input number EXACTLY ONE output number. Be careful. Not every relation is a function. 4 Nov 2011 10 Dec 2013 Each function is a relation but each relation is not a function. In this lesson we shall discuss some basic definitions and operations involving sets, Cartesian Learn about ordered-pair numbers, relations and an introduction to functions, Algebra: What are relations and This Algebra 1 level math video tutorial - defines Introduction. An ordered pair is a set of inputs and outputs and represents a relationship between the two values. A relation is a set of inputs and outputs, and a function is a relation with one output for each input. You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function! Watch this tutorial to see how you can determine if a relation is a function. In contrast, a function defines how one variable depends on one or more other variables. This video series is based on Relations and Functions for class 12