SHG11 - GENERAL MATHEMATICS - LESSON 1

relation

set of ordered pairs

domain

set of first elements in a relation

domain

independent variable

range

set of second element in a relation

range

dependent variable

function

special type of relation that gives a single output number for every valid input number

not a function

has more than one output

function

every input must have an output

function

two different inputs can have the same output

function

one input can only have one output

vertical line test

used to determine whether the graph represents a function or not.

piece-wise function

a function which consists of two or more functions in a specified domain.