Answer:
Step-by-step explanation:
The opposite of a number is found by taking the opposite sign of the one given.  The opposite of 3 is -3; the opposite of -2 is 2.
Therefore, the opposite of -5.5 (point P) is 5.5 (point S).
 
        
             
        
        
        
Like 4 and 8 im pretty sure hope i helped best of luck have a gr8 night :)
        
                    
             
        
        
        
Answer:
6x - 7y?
Step-by-step explanation:
2x3y + 8xy - 4x2y - 16y
10x11y - 4x2y - 16y
6x9y - 16y
6x - 7y
(I'm also confused by this problem, but I tried to provide my viewpoint of how I'd solve it)
(Feel free to ask questions or ask for clarifications)