Determine Whether the Graph Is That of a Function

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.
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A) function domain:
Range:
Intercepts: (-4, 0) , (0, -4) , (0, 4) , (4, 0) symmetry: x-axis, y-axis, origin
B) function domain:
Range:
Intercepts: (-4, 0) , (0, -4) , (0, 4) , (4, 0) symmetry: x-axis, y-axis
C) function domain:
Range:
Intercepts: (-4, 0) , (0, -4) , (0, 0) , (0, 4) , (4, 0) symmetry: origin
D) not a function