Determine whether the equation defines y as a function of x: y^2+x=4

Question

nincompoop · Answer

what does your question mean?

anonymous · Answer

This is a question on my homework. It just says determine whether the equation defines y as a function of x and then gives that equation.

nincompoop · Answer

what does it mean?
what is a function, what makes it a function of x?

anonymous · Answer

a function is a relation that associates with each element of x exactly one element of y. I have no idea what makes it a function or if it is a function.

nincompoop · Answer

you did not define it in your own words?

nincompoop · Answer

f(x) = dog
y = dog

anonymous · Answer

Help!!

anonymous · Answer

does not define y as a function of x, because some value(s) of x have more than one y.

anonymous · Answer

You're done.

anonymous · Answer

Thanks!

anonymous · Answer

You can solve it algebraically as well, and you'll still see y has more than 2 x values so it's not defined.

anonymous · Answer

how would you do it algebraically to show work?

anonymous · Answer

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