Answer:
 A point whose x coordinate is zero and y-coordinate is non-zero will lie on the y-axis. 
 
        
             
        
        
        
Ahh that’s very very very very swag
        
                    
             
        
        
        
2x + y = 5
x − 2y = 10
y = 5 − 2x
x − 2(5 − 2x) = 10
x − 10 + 4x = 10
5x − 10 = 10
<em>add 10 to each side</em>
<em>5x-10+10 = 10 + 10</em>
<em>5x=20</em>
5x = 0    <em>this is the error</em>
He needs to add 10 to each side
 
        
             
        
        
        
Step-by-step explanation:
Ermm you're gonna have to write the entire question here for assistance
 
        
             
        
        
        
Answer:
 
is the last one
Step-by-step explanation:
the line is dotted and shaded above