3(d + 11) = 6(d + 33)
So you have: 3d + 33 = 6d + 198
which is: -3d = 165
or d = -55
So you have <em>only one answer.</em>
 
        
                    
             
        
        
        
<h3>
Answer: slope =  1/3</h3>
===================================================
Work Shown:
Use the slope formula to get
m = (y2 - y1)/(x2 - x1)
m = (0 - (-3))/(9 - 0)
m = (0 + 3)/(9 - 0)
m = 3/9
m = 1/3
----------------
Basically we subtract the y coordinates, and do the same for the x coordinates as well (subtract in the same order). Afterward, divide the two results. Reduce the fraction as much as possible.
A slope of 1/3 means we move up 1 unit each time we move to the right 3 units. 
The slope being positive means the line goes uphill as you read from left to right.
 
        
        
        
The whole equation simplified to one answer is 5
        
                    
             
        
        
        
Cut 5 equal sections from a 2 foot long ribbond