<h2><u>Given</u><u>:</u><u>-</u></h2>

<h2><u>Solution</u><u>:</u><u>-</u></h2>




 
        
        
        
I'm assuming this is a system of equations you want solved so,
x = -y + 3
-2(-y+3)+4y = 6
2y - 6 + 4y = 6
6y = 12
y = 2
x + 2 = 3
x = -1
(-1,2)
        
                    
             
        
        
        

180 degress because a stranight angle equals that
 
        
             
        
        
        
Add the equations.
x-y%2B0.5x%2By=7%2B5
1.5x=12
  
highlight%28x=8%29
Now use either equation to solve for y.
8-y=7
highlight%28y=1%29
x=8
y=1