2007-04-01 10:12:49 · 4 answers · asked by 8 3 in Science & Mathematics ➔ Mathematics
The slopes of the lines are determined by the directional vectors only.
The slope m, of the line r1 = (1,7) + t(-3,4) is:
m = 4/-3 = -4/3
The slope m', of the line r2 = (2,0) + s(3,-4) is:
m' = -4/3
m = m'
Therefore the lines are parallel.
2007-04-02 18:18:19 · answer #1 · answered by Northstar 7 · 0⤊ 0⤋
The first line has a slope of 3/4
The second line has a slope of -4/3
They are perpendicular because the product of their slopes is -1.
2007-04-01 17:19:13 · answer #2 · answered by ironduke8159 7 · 0⤊ 1⤋
find slopes of each line :
(7-4)/(1--3) =3/4 = slope
(0--4)/(2-3) = -1 = slope
they are not parallel because the slopes are different.
They are not perpendicular because the slopes are not negative reciprocals of each other
2007-04-01 17:21:13 · answer #3 · answered by bignose68 4 · 0⤊ 1⤋
perpendicular
2007-04-01 18:11:47 · answer #4 · answered by giselle L 1 · 0⤊ 1⤋