Reflection across the line y= -x, 
(x, y) —-> (-y, -x) 
so, C’ will be (-1, 3), B’ will be (3, 2), and A’ will be (2, -6)
        
             
        
        
        
It is rounded to the hundredths. 
        
                    
             
        
        
        
False it can work with non right angles triangles too
        
                    
             
        
        
        
Let g be the number of grandchildren, and d be the number of dogs. They both have only one head, so the number of heads is

Grandchildren have 2 legs, while dogs have 4. So, the total number of legs is

From the first equation (the one for the heads) we can derive

Substitute this into the second to get

So, there are 9 dogs and (from the first equation

 
        
             
        
        
        
Answer:
19
Step-by-step explanation:
4×4= 16+12= 28
2×3= 6+3= 9
28-9= 19