SOLUTION: y=x+4 y=3x How do you solve the system of equations?

Algebra ->  College  -> Linear Algebra -> SOLUTION: y=x+4 y=3x How do you solve the system of equations?      Log On


   



Question 415972: y=x+4
y=3x
How do you solve the system of equations?

Answer by praseenakos@yahoo.com(507) About Me  (Show Source):
You can put this solution on YOUR website!
its substitution method...
substitute y = 3x in the other equation

==> y = x+ 4
==> 3x = x + 4

3x -x = x - x + 4

2x = 4

2x%2F2++=+4%2F2

==> x = 2


==> y = 3(2) = 6