Answer:
A) Vertical.
Step-by-step explanation:
It must pass the vertical line test. That is it must not have any vertical line passing through more than one point on the curve. If it does then it is not a function.
Thus , for example, a circle graph would not be a function.
33 * 3 + 3/3 = 100
I do not believe u have to use all of the operations because it says " at most once ".
