I believe it’s a but I’m not exactly sure
Answer:

Step-by-step explanation:

So,
We know that we cannot add or subtract quantities of the same kind.
-18xy can only be added/subtracted to 4yx, which is the same as 4xy. The result would be -14xy, or -14yx.
The correct option is B.
Answer:
The correct answer to your question is A because your asking for the vertex of the equation.
Step-by-step explanation:
Vertex Algebraic Equations
I think c and b are correct answers