SOLUTION: Solve the following system: 2x + y = 8 2x - y = 0 I don't understand how to figure these out in order to place on my graph.

Algebra ->  Linear-equations -> SOLUTION: Solve the following system: 2x + y = 8 2x - y = 0 I don't understand how to figure these out in order to place on my graph.      Log On


   

Question 43534: Solve the following system:
2x + y = 8
2x - y = 0


I don't understand how to figure these out in order to place on my graph.
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
2x+%2B+y+=+8
+
2x+-+y+=+0
=
2x+%2B+y+%2B+2x+-+y+=+8+%2B+0
4x+=+8
x+=+2
PLUG:
2x+-+y+=+0
4+-+y+=+0
y+=+4
Answer: (2,4)
+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-2x+%2B+8%2C+2x+%29+