If given the equation, you need to take the number beside the x and y and change their signs to get your point:
x - 8 (Take the -8 and make it +8)
y + 2 (Take the +2 and make it -2)
Your point is (8, -2)
 
        
                    
             
        
        
        
Answer:
0.1 I believe would be your answer
 
        
                    
             
        
        
        
She could measure the next length to the left or right and she will have all 4 sides because a rectangle has 2 sets of equal sides.