The figure that correctly demonstrates that f is not a function of x is graph (c)
How to determine the figure?
The missing figure that represent the list of options is added as an attachment
To demonstrate a function using a straight line is referred to as a vertical line test.
The vertical line test is such that a vertical line is drawn from the x-axis in an upward and/or downward direction.
If the line touches the curve or line of the function more than once, then the graphed equation is not a function of x
The graph that carries out this scenario is graph (c)
Read more about vertical line test at:
https://brainly.com/question/1821791
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