When looking at the graph of a relation, explain how to tell if the relation is a function.

Question

anonymous · Answer

Is it possible for me to draw a vertical line (straight up and down) that passes through my graph MORE THAN ONCE?

anonymous · Answer

dod u get it

anonymous · Answer

Yeah I got it .. I'm not sure .. That's all it says . :/

anonymous · Answer

every input there's one unique output.. that's the basic definition of a function.. 
in simple terms: the x values should not be repeated..

anonymous · Answer

^ Is that the answer ? Cause I'm really confused on this one ...

anonymous · Answer

no, that's not the answer.. i'm just explaining.

anonymous · Answer

Oh okay , So how would I go about explaining it . ?

anonymous · Answer

anonymous · Answer

Thank you . c:

anonymous · Answer

your welcome