2 1/3. 3 inches by 2 1/3 inches is 7. A 3rd of that is 2 1/3 or 2.3333333333
        
             
        
        
        
Pick any two points
(0, 3), (-1,9)
Find slope (y2-y1)/(x2-x1)
(9-3)/(-1-0) = 6/-1 = -6
Y = -6x + b
Plug in a point
3 = 0 + b, b= 3
Final equation: y = -6x + 3
        
                    
             
        
        
        
Step-by-step explanation:
To determine what the height of the ladder reaches up the wall we need to know the height of ladder which is not provided in the question.
So if I assume the height of ladder to be 10ft( just a general assumption)
Then, inclined ladder, wall and distance been the bottom of the ladder and wall will form a right angle triangle. 
where height of ladder will be hypotenuse, height of the ladder reaches up the wall will be perpendicular and distance been the bottom of the ladder and wall will be base. 
Since, A ladder is inclined at 23 degrees against the wall
⇒ height of the ladder reaches up the wall  = Height of ladder×sin23°
= 10ft × sin23° = 3.9073 ft
 
        
             
        
        
        
Answer:
9016 litres left 
Step-by-step explanation:
The fish were not sick.
You would multiply 20.5 by 48 which is the amount of hours in 2 days then subtract that amount from 10000 to see how much is left