Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function
domain: {x|-1 ? x ? 1}
range: all real numbers
intercepts: (-1, 0), (1, 0)
symmetry: x-axis, y-axis
B. function
domain: {x|x ? -1 or x ? 1}
range: all real numbers
intercepts: (-1, 0), (1, 0)
symmetry: x-axis, y-axis, origin
C. function
domain: all real numbers
range: {y|y ? -1 or y ? 1}
intercepts: (-1, 0), (1, 0)
symmetry: y-axis
D. not a function
Answer: D
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