Use the vertical line test to determine whether the graph is the graph of a function.

Question

ybarrap · Answer

Do you know why?

anonymous · Answer

this is an eyeball problem.  check to see if any vertical line crosses the graph at more than one point.  if it does, that means that the x - value of that line corresponds to more than one y - value so you do not have a function

ybarrap · Answer

since a function can only have a single value (not more) for every input, by definition; so if you draw a vertical line and it hits more than one value, you have violated the definition of function and the graph can not represent a function in that case

anonymous · Answer

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