Answer:
1. 3 7/12 (decimal: 3.583333)
2. -5 3/28
3. 2 29/40
4. −1  9
/14
 
        
             
        
        
        
Rewrite the question, as follows:
 45 is what percent of 225?
Form the ratio 45/225, and then multiply the result by 100%:
0.20(100%) = 20% (answer)
 
        
                    
             
        
        
        
Answer:  The slope is 0 
Step-by-step explanation:
The slope is the difference between the y coordinates divided by the difference between the x coordinates. 
Y:  9 - 9 = 0 
x: -7-2 =   -9 
0/-9= 0