SOLUTION: Solve the system by graphing, addition and substitution methods. 3x – y = 1 3x – y = 2

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Question 55215: Solve the system by graphing, addition and substitution methods.
3x – y = 1
3x – y = 2
Answer by venugopalramana(3286) About Me  (Show Source):
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Solve the system by graphing, addition and substitution methods.
3x – y = 1 ..........1
3x – y = 2................2
eqn.1 - eqn.2
0=1-2=-1...not possible..hence no solution..they are in consistent eqns.
x...............0.......................2..............4......etc
y=3x-1.........-1.......................5..............11.....etc
y=3x-2.........-2.......................4...............10.....etc
+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C%283%2Ax-1%29%2C+%283%2Ax-2%29%29+
the 2 graphs are parallel and do not intersect hence there is no solution.