Which graph does NOT represent y as a function of x?

The third graph (vertical blue line)

Step-by-step explanation:

The third graph illustrates a case where y may (and does) take on more than one value for a single x value.

The domain of the function is, 0 ≤ x ≤ 76,867

And the range is, 0 ≤ f(x) ≤ 12,375,587

Step-by-step explanation:

Let f be the function that shows the revenue,

⇒ f(x) = 161 x

Where, x is the number of people in attendance,

Since,  Domain of f(x) = The set of all possible value of x

Range of f(x) = The set of all possible value of f(x)

Since, the least value of x = 0,

And, the maximum value of x = 76,867

Hence, the domain of f(x) = 0 ≤ x ≤ 76,867

Now, the minimum value of f(x) = 0 ( At x = 0 )

While the maximum value of f(x) = 161 × 76867 = 12,375,587

⇒ The range of f(x) = 0 ≤ f(x) ≤ 12,375,587