posted by Anonymous .
are these two lines perpendicular?
How do I determine if these two are perpendicular?
it is not perpendicular is this correct?
Perpendicular lines have slopes that are negative reciprocals of each other.
Thus perpendiculars of
y = -(1/2)x + anything
will have a form like
y = 2 + something
The two lines you specified are in fact parallel, because they have the same slope : (y = -x/2 + something)