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OpenStudy (anonymous):
Given points P(7, 5), Q(8, 3), R(0, -1), and S(-1, 1), which statement is true? a)PQ is parallel to RS b)Pq is perpendicular to RS c) PR is perpendicular to QS d)Pr is parallel to QS
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OpenStudy (dumbcow):
A use slope formula to verify
OpenStudy (anonymous):
whats the slope formula?
OpenStudy (dumbcow):
m = y2-y1/x2-x1
OpenStudy (dumbcow):
PQ = (5-3)/(7-8) = -2 RS = (-1-1)/(0-(-1)) = -2 same slope means parallel
OpenStudy (anonymous):
thanks darling (:
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