There you go, hope that this helps
 
        
        
        
The slope/y-int form would be y=9/2x+2 you have to move the x value and whole number(y-int) to the other side which would make them negative and then divide by the -2 and there you go.
        
             
        
        
        
ummmm it could be third one i guesss
 
        
                    
             
        
        
        
Answer 
20% for the first one
        
                    
             
        
        
        
Answer:
7 teachers
Step-by-step explanation:
you decide 100 by 15 which equals 6.7 since you can't have half a teacher you round it to 7 teachers.