Line qr contains (2, 8) and (3, 10) line st contains points (0, 6) and (−2, 2). lines qr and st are

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 interceptsmeans Line QR and Line ST are
PARALLEL LINES

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post