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britneyramirez8
mathematical relationship in which each input corresponds to the same terms. 
A function is a mathematical expression  that describes the relation between each input and output . for example F(x) = x+2 In this equation F(x) is your output and x is your input . 
If x=2 ; F(x) = 4 , If x= 3 ; F(x) = 5 .