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Mathematics 7 Online
OpenStudy (anonymous):

is the line through points p(-8 -10) and Q(-5,-12) perpendicular to the line points R(9,-6) and S(17,-5) explain (anyone up that can help?) I give medals

OpenStudy (aum):

Find the slope of the line through PQ. Find the slope of the line through RS. Multiply the slopes. If it is -1, the lines are perpendicular.

OpenStudy (anonymous):

omg thank you!!

OpenStudy (aum):

You are welcome.

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