Determine Whether the Graph Is That of a Function $\{x \mid x>0\}$

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: $\{x \mid x>0\}$
range: all real numbers
intercept: $(1,0)$
symmetry: none

B)
function
domain: all real numbers
range: $\{y \mid y>0\}$
intercept: $(1,0)$
symmetry: none


C)
function
domain: $\{x \mid x>0\}$
range: all real numbers
intercept: $(0,1)$
symmetry: origin

D)
$\text { not a function }$