Answer:
-1
Step-by-step explanation:

Hope this helps!
Answer: x-2
Step-by-step explanation:
I am legit doing this in school but I don't know it lol
Answer:
Three non-collinear points determine a plane.
Step-by-step explanation:
This statement means that if you have three points not on one line, then only one specific plane can go through those points. The plane is determined by the three points because the points show you exactly where the plane is