Question 49861
3x - y = 1
3x - y = 2 

Solve each equation for "Y":
y=3x-1
Plot the points (0,-1), and (1,2)
Draw the line thru them
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y=3x-2
Plot the points (0,-2) and (1,1)
Draw the line thru them
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The lines are parallel; they never meet.
Therefore there is no solution to this system of equations.

Cheers,
Stan H.