50 pairs of whole numbers
        
             
        
        
        
Answer:
5 ft melinda
Step-by-step explanation:
5 inches is like the length of your hand
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Slope= -5
y-intercept= 4
 
        
                    
             
        
        
        
X= y(d-b) over a-c would be the answer
        
             
        
        
        
Answer:
There are an infinite number of solutions.
Step-by-step explanation:
An equation with 2 unknowns give an infinite amount of solutions, here is just one of the many: 
Let y= 3 ( y can be any number)
 (3) + 1 = -4x
4 = -4x
x = -4/4
x= -1
(x;y) = (-1;3)
Generally x and y can be any number, just let x or y be any number, then find the other variable based on the value of the number u assumed.