Answer:
A) 1 line of symmetry 
Step-by-step explanation:
 
        
                    
             
        
        
        
2 goes into both numbers, so divide both by 2;
10 ÷ 2 = 5
42 ÷ 2 = 21
so 10/42 in simplest form is: 5/21
 
        
             
        
        
        
Answer:
(-5,-3)
Step-by-step explanation:
y values minus y values over x values minus x values 
 
        
             
        
        
        
Answer:
The second leg of the right triangle is about 9.4.
 
        
                    
             
        
        
        
I think the answer is A
Hope it helps :-)