Question 1147016: explain why you cannot answer the following question.
If y=0 when x=0, what is x when y=13?
Found 2 solutions by Theo, ikleyn:
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! you have no idea what the relationship is between x and y.
if the equation is y = x, then you can say that when y = 13, x = 13.
other than that, you cannot be guaranteed that, when y = 13, x will also be 13.
a couple of examples:
y = 2x.
when y = 0, x = 0
when y = 13, x = 6.5
y = x^2
when y = 0, x = 0
when y = 13, x = sqrt(13)
note that, when y = 0, x doesn't necessarily have to be equal to 0.
example:
y = x + 2
when y = 0, x = -2
even though some equations will let x be equal to 0 when y is equal to 0, it doesn't necessarily follow that, when y = 13, x = 13.
it has to do with the equation that tells you the relationship between x and y.
Answer by ikleyn(52847)  (Show Source):
You can put this solution on YOUR website! .
The short answer to your question is THIS :
You can not answer the question, because the given part is not relevant to the question,
and, vice versa, the question is not relevant to the given part.
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