Determine whether the equation defines y as a function of x.
-$$x ^ { 2 } + y ^ { 2 } = 36$$
A) $y$ is a function of $x$
B) $y$ is not a function of $x$

Question

Quizplus · Accepted Answer

This equation defines a circle with radius 6 centered at the origin. For each value of x on the circle, there are two possible values of y, one above the x-axis and one below. Therefore, y is not a function of x.

Determine Whether the Equation Defines Y as a Function of X