Answer:
it has one solution
Step-by-step explanation:
1.y=x-3 
2. 3y-3x sub x-3 in place of y therefore
it can also be written as 3x-3x-9=9
if you add 9 to both sides 3x-3x-9+9=-9+9
0+0=0
 
        
             
        
        
        
Answer:
you need to tell me the question first!
Step-by-step explanation:
 
        
             
        
        
        
Answer: 6 - 5
<u>Step-by-step explanation:</u>
|z - 6| - |z - 5|    ; z < 5
Since z < 5, then 
|z - 6| will be the absolute value of a negative number. Replace the absolute value with a negative and parentheses: 
-(z - 6) =  -z + 6
|z - 5| will be the absolute value of a negative number. Replace the absolute value with a negative and parentheses:  
-(z - 5) = -z + 5
Now subtract them without the absolute value signs:
-z + 6 - (-z + 5)
Distribute the negative sign:
-z + 6 + z - 5
-z + z = 0 which leaves:
6 - 5
 
        
                    
             
        
        
        
Step-by-step explanation:
You have to go to Y axis first then to X. For example : (4,5) go up 4 and go to x axis and when u get to 5 you put a dot. The same thing if is (-4,-5) go down 4 and to the left 5 and mark a dot. When you mark the dot put (_,_).
Hope you understand. Let me know if you don't.