Respuesta :

altavistard
Rewrite 

x-2y=1 
y=1/2x+3

as
                               -x + 1                  
-2y = -x + 1, or y = ----------  or   y = (1/2)x - 1/2
                                   -2

y = (1/2)X + 3

Since the slopes are the same (1/2), and the y-inercepts different (-1/2 and 3), the system represents two parallel lines with NO solution.

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