Question 58532
YOU MAKE UP A TABLE WITH THREE COLUMNS 
---------X------(-2Y)------=6 THE EQUATION
IF-------2--THEN(-2)-------=6  SUBSTITUTING ANY VALUE FOR X AND SOLVING FOR Y 
IF-------4--THEN(-1)-------=6
IF-------6--THEN(0)--------=6
IF-------8--THEN(1)--------=6
IF------10--THEN(2)--------=6  

YOU CAN PICK ANY NUMBER FOR X OR Y.
IF YOU PICK A NUMBER FOR X THEN SOLVE FOR Y.
IF YOU PICK A NUMBER FOR Y THEN SOLVE FOR X.