Respuesta :

calculista
we have that

case 1
3x-7y=9
-4x+5y=1
using a graph tool
the solution is the point (-4,-3)------------------> one solution

case 2
y=6x-2
y=6x-4
two parallel lines
the system has no solution---------------> zero solution


case 3
-5x+y=10
-25x+5y=50
is the same line----------------> infinite solutions

the answer is
see the attached figure
Ver imagen calculista
Ver imagen calculista

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