To determine whether the equation defines y y y as a function of x x x, we need to check if for every x x x there is exactly one y y y. This can be done by solving the equation for y y y and checking if y y y is uniquely determined by x x x.
We start with the equation y2=x y^2 = x y2=x.
To determine if y y y is a function of x x x, we solve the equation for y y y: y=±x y = \pm \sqrt{x} y=±x
The solutions to the equation are y=x y = \sqrt{x} y=x and y=−x y = -\sqrt{x} y=−x. This means for each x x x, there are two possible values of y y y.
Since there are two possible values of y y y for each x x x, the equation does not define y y y as a function of x x x.
The equation does not define y as a function of x. \boxed{\text{The equation does not define } y \text{ as a function of } x.} The equation does not define y as a function of x.
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