SOLUTION: explain why you cannot answer the following question. If y=0 when x=0, what is x when y=13?

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.

RELATED QUESTIONS
If the horizontal asymptote for f(x) = (x-4)/((x^2)-4) is y=0, why is it that when I plug (answered by josgarithmetic)
Explain Why does a graph lies above the x-axis when... (answered by josgarithmetic)
I am very unsure when it comes to functions. Can you please help me to understand what... (answered by stanbon)
Good day please may you assist me in the following question. Consider the integers x... (answered by mahikab,math_tutor2020)
The solution set for |x| > 0 is {x|x cannot be 0}. Explain why. (answered by ikleyn,math_tutor2020)
Please help me answer the following question: If y varies inversely as x and y=8 when... (answered by Mike,GrantJones,Fombitz,Alan3354)
Pls help! If you can answer either one of them, I am so appreciated. 1.(x-2)(x+3)^2 /... (answered by Fombitz)
6. Tayler claims that when a linear equation is written in general form, Ax + By + C =... (answered by josgarithmetic)
Pls help! If you can answer either one of them, I am so appreciated. 2. If... (answered by Fombitz)