Test for Functions


Ask a Question, Get an Answer!
Hundreds of tutors are online and ready to help you right now!

 

 

Following are the test for Functions

(a) (i) The relation should be one-one or many-one, and

(ii) Every first element is mapped which means that every pre-image should have an image.

(b) For graphs:

Draw a line parallel to the y-axis. If it cuts the graph only in one point, then the graph represents a function. If it cuts in more than one point then the relation is not a function (because the relation will become one-many and for one value of x we will have two or more values of y).

The following graphs represent functions:

Function; {(x, y) : y = x + 1}

Function; f(x) =

Function; {(x, y):y = x2}

The following graphs do not represent functions:

Not function; {(x, y) ; x2 + y2 = 9}

Not function;

Not function; f(x) = {(x, y): x = y2}



Ask a Question? Get an Answer!

connect to a tutor


Related Searches

test for functions summary

;,  

functions graphs

,  

graphs of functions

,  

function graph relation

,  

function summary

,  

representation of a function

,  

functions with graphs

,  

functions with graph

,  

types of functions mapping

,  

graph of a function

,  

relation and function

,  

graphing functions

,  

types of functions

,  

representation of functions

,  

graph function

,  
pre algebra test
,  
algebra test
,  
free algebra test
,  
test values
,  
science test
...more