Answer:
What he did wrong is that he did not flip all of the points. since S is 1 point up, it would then reflect 1 point down. point P is 3 up and the reflection should be 3 down. Q should be 3 down as well and R is 1 down below the x axis. The Y does not move for all of the points. 
Step-by-step explanation:
I hope this helps! 
 
        
             
        
        
        
Answer: Stephanie read more than 7 books because 8 points for 9 books each is equal to 72 points, which is the total amount of books she read.
Step-by-step explanation:
72 ÷ 8 × 9
x = 9
Hope this helped! :D
 
        
                    
             
        
        
        
Answer:
57
Step-by-step explanation:
7-3=4
3x4=12/3=4
do that two times because there is two triangles
7x7=49 
4+4+49=57
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
 
        
             
        
        
        
Answer:
F is 0
Step-by-step explanation:
If you divide X on both sides to get X on one side, it will end with F = -2 + 2, which is 0