Determine whether the equation defines y as a function of x.
-$$y ^ { 2 } = 8 - x ^ { 2 }$$
A) function
B) not a function

Question

Quizplus · Accepted Answer

The equation does not define y as a function of x because for a given x-value, there can be two different y-values (one positive and one negative) that satisfy the equation, violating the definition of a function where each input must have exactly one output.

Determine Whether the Equation Defines Y as a Function of X