Answer:
points (2,3) and (-2,9)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
3 People on right + 4 people on the left = 7 people + himself = 8 people in the group 
 
        
             
        
        
        
Answer:
-9 and 3
Step-by-step explanation:
as -9×3= -27 
and 
-9+3= -6
 
        
             
        
        
        
Answer:
b is not a function
Step-by-step explanation:
To be a function there must be a one to one correspondence.
Each x must only go to one y
b has an x that goes to two different y's
1 goes to 5 and 13.  That makes it a relation not a function
 
        
             
        
        
        
It’s 56 bc a straight line = 180 so 180-124=56