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(m+1)y=-mx+4|: (m+1)
y=[-m/(m+1)]*x +[4/(m+1)] równianie kierunkowe prostej
b)
-m²x + (1 - m²)y + 4 = 0
(1 - m²)y=m²x - 4 |:(1 - m²)
y=[m²/(1 - m²)]*x -[4/(1 - m²)] równianie kierunkowe prostej
/-podzielić
*- razy