Determine whether the equation defines y as a function of x.
-$$y ^ { 2 } = 5 x$$
A) $y$ is a function of $x$
B) $y$ is not a function of $x$

Question

Quizplus · Accepted Answer

The equation $y^2 = 5x$ does not define $y$ as a function of $x$ because for any given value of $x$, there are two possible values of $y$ (one positive and one negative) that satisfy the equation. This violates the definition of a function, which requires that each input is associated with exactly one output.

Determine Whether the Equation Defines Y as a Function of X