Answer:
F(x) is simply another name for y. therefore they all are graphs for F(x) just different equations. 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
This is because √-1 is<em> i</em>, which is an extension of real numbers called complex numbers.
Step-by-step explanation:
A real number is one that can be expressed in decimal form.Real numbers are those that appear on the number line.In mathematics, √-1 is i which is an extension of real numbers to represent complex numbers.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
x-7
3y+1-7
3y-6
 
        
             
        
        
        
Answer: (x+4)(x−9)
Step-by-step explanation: