Question

Which ordered pair is a solution to the system of equations? Use the graph.

Answer 1

 { x + 2y = 4    * ( 3 )
  -3 x + 2y = -4 

 3 x + 6 y = 12
-3 x + 2 y = -4
---------------------
          8 y = 8
      
             y = 8 / 8
           
             y = 1

For x :

x + 2 y = 4

x + 2*(1 ) = 4
 
x + 2 = 4

x = 4 - 2

x = 2

Answer C   ( 2 , 1 )

hope this helps!