Answer:
0
Step-by-step explanation:
Use the slope formula: m = 
m = 
The slope of the line is 0.
 
        
             
        
        
        
Answer:
False, the angles remain unchanged
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
endpoint is (29, -13)
Step-by-step explanation:
Formula for midpoint is 
So, let  be the coordinates of the endpoint you are looking for.
 be the coordinates of the endpoint you are looking for.
 and
  and  
 
 = (10, -3)
 = (10, -3)
 
           
-9 +  = 20         7 +
 = 20         7 + 
 
                    
endpoint is (29, -13)