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

Name: Determine whether the equation defines y as a function of x. -\[x = y ^ { 2 }\] A) $y$ is a function of $x$ B) $y$ is not a function of $x$
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Question

Quizplus · Accepted Answer

For a given value of $x$, there can be two values of $y$ (one positive and one negative) since $y^2 = x$. This violates the definition of a function, which requires each input to have exactly one output.

Determine Whether the Equation Defines Y as a Function of X