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: all real numbers
Range: all real numbers
Intercept: (0, -4)
Symmetry: none

B) function
domain: all real numbers
range: {y|y = 5 or y = -4}
intercept: (0, -4)
symmetry: none

C) function
domain: {x|x = 5 or x = -4}
Range: all real numbers
Intercept: (-4, 0)
Symmetry: x-axis

D) not a function

Correct Answer:

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