Answer:
b
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 
Step-by-step explanation:
Let the angle of depression be x.

 
        
             
        
        
        
Answer:
-0.2
Step-by-step explanation:
Gradient/slope = 
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
the x intercepts are -1 and 1 (where y = 0)
the y intercept is 1 (where x = 0)
 
        
                    
             
        
        
        
Answer:
Yes it is.
Step-by-step explanation:
Yes it is.
Rational number is the subset of:
- Whole number(Positive number+0)
- Natural number
- Negative numbers
- Fractions &
- Decimals
-9 is a decimal, and decimals are subset of rational number so -9 is a rational number.
Hope this helps ;) ❤❤❤