Line QR :
(2,8)(3,10)
slope = (10 - 8) / (3 - 2) = 2/1 = 2
y = mx + b
8 = 2(2) + b
8 = 4 + b
8 - 4 = b
4 = b
and ur y int = 4
Line ST :
(0,6)(-2,2)
slope = (2 - 6) / (-2 - 0) = -4 / -2 = 2
and ur y int (0,6) = 6
same slopes. different y intercepts.....means Line QR and Line ST are
PARALLEL LINES
