well, let's see. parallel lines have the same slope.
I guess that leaves only perpendicular as the correct response.
Surely a topic as basic as this is highlighted in a shaded box in your text! It can't possibly be as fast to post here and await a response as to simply check your textbook.
If m1 and m2 are the slopes of two lines, where m1 . m2 =-1, the lines are?
the same, or parallel or perpendicular?
1 answer