Hi guys! This video discusses the concepts of functions amd relations. Relations are just sets of ordered pairs while functions are special relations wherein for every first elemet of ordered pair, there corresponds a uniques second element. The set of first elements in a function is called the domain amd the set of second elements is called the range. Functions are used to denote the relationship of two or more variables. This is one of the useful topics in math as every equation can be expressed as a function of a viriable. Different notations and representaions can be used to specify a function like table of values, sets of oredered pairs, mappling, graphs, rule or equation. When using mapping we can have, one-to-one correspondence, one to many correspondence, and many-to-one correspondence being the first two as fucnctions and the lateter not. When using graph, we can determine if is a function using vertical line test. We solve some examples to further illustrate the concepts of functions and relations. Happy learning and enjoy watching! #math #tagalog #relations #functions