Question

!!!Yes/ no answer please help!!!
Determine whether the following equation defines Y as a function of X.
x^2+y^2=100
Does the equation define Y as a function of X?
A. Yes.
B. No
( I would like an explanation to why it would or why not it does define to better understand future problems like this.)

Answer 1

For something to be a function of another there can only be one out put for each input. So for a certain value of x is there only one value for y?

Answer 2

If x = 6 what could y equal in the above equation

Answer 3

y=8?

Answer 4

Only 8?

Answer 5

What about (-8)?