Question

Line BC contains points B (4, −5) and C (3, 2). Line DE contains points D (2, 0) and E (9, 1). Lines BC and DE are?

parallel

perpendicular

neither

Answer 1

u knw how to find slope ? :)

Answer 2

no o.o

Answer 3

hmm we must use slope here, to find out whether lines are parallel/perp

Answer 4

see if this helps quick to learn how to find slope
http://www.algebralab.org/lessons/lesson.aspx?file=geometry_coordslope.xml