l1 : (−3, −5) dan (-1, 2)
l2 : (0, 4) dan (7, 2)
Jawab:
l1 : m1 = (2-(-5))/(-1-(-3)) = 7/2
l2 : m2 = (2-4)/(7-0) = -2/7
m1 x m2 = -1, maka tegak lurus
l1 : (−3, −5) dan (-1, 2) l2 : (0, 4) dan (7, 2)
l1 : (−3, −5) dan (-1, 2)
l2 : (0, 4) dan (7, 2)
Jawab:
l1 : m1 = (2-(-5))/(-1-(-3)) = 7/2
l2 : m2 = (2-4)/(7-0) = -2/7
m1 x m2 = -1, maka tegak lurus