X-3y=14
x=4y

solve using substitution

Solve both equations for one variable.  Since the second equation is already solved for , we'll solve the other one for .

and are our two equations.  

Now we can assume that if and , we can assume that .  If we solve for , we get that .  Plug in into either one of the equations, I'll use .   so [/tex]x=-8[/tex].  Know we know what and are, so we can put it in an orderned pair:  (-8,-2)