Whether the curve is a graph of a function of x. If so, find the domain and range of the function.
The curve is not a function of x.
The vertical line test states that the curve in the xy coordinate plane is the graph of a function of x if and only if a vertical line intersects the curve exactly at one point.
Perform the vertical line test for the given graph.
Draw a vertical line in such a way that it passes through the curve as shown below in Figure 1.
From Figure 1, it is observed that the vertical line intersects the curve at three distinct points.
So the given function fails the vertical line test.
Therefore, the curve is not the graph of a function of x.
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