You can use a diffrent kind of ruler for math then you could find the answer.
Answer:
Hyperbola.
Step-by-step explanation:
We start from the function:

We may get the traces if we cut the surface in planes x=k. This is equivalent to replace x for k:

The last equation is the equation of an hyperbola, which varies its characteristics depending on K (the plane cut).
The believe the answer is C but I could be wrong, good luck!
1 solution.
This is referred to as a conditional equation.