I’m pretty sure
8. would be false because BK would be 12 where as DF is 10.8
9. is true
It is more than one I think because it becomes -1 over -12 WITHOUT the -power and then add the power and it becomes positive. Make the power positive and it will become negative making it less than 1.
Use Hooke's law... (just kidding)
Break down each force vector into horizontal and vertical components.



The resultant force is the sum of these vectors,

and has magnitude

The closest answer is D.
The answer is: -2 because as x increases by 1 y decreases by -2