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Mathematics 7 Online
OpenStudy (anonymous):

Which one of the following relations represents a function?

OpenStudy (anonymous):

OpenStudy (anonymous):

@ParthKohli

OpenStudy (anonymous):

@dpaInc @.Sam. @cwrw238 @phi @A.Avinash_Goutham

OpenStudy (phi):

a function does not allow the same x with a different y so (1,2) and (1,3) are not allowed (same x=1 but 2 different y values)

OpenStudy (phi):

one quick way to test some of these is try y= +1 and y=-1 and see if x is the same. if you get the same x, then you do not have a function.

OpenStudy (anonymous):

i think its a

OpenStudy (anonymous):

@phi

OpenStudy (anonymous):

can you help me @Neemo

OpenStudy (anonymous):

yeaah ! a isn't a function ! that's correct !

OpenStudy (phi):

if by (a) you mean y^2 = x^2 notice that (1,1) and (1,-1) both work. Try it. so it is not a function

OpenStudy (anonymous):

You are trying to find the one that is a function not the one that isn't

OpenStudy (anonymous):

so a is definitely not the answer

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