Question

What is the relationship between the lines determined by these two equations?

3x + 6y = 8
y = 2x – 8

(Points : 4)
parallel
perpendicular
neither parallel nor perpendicular
they are the same line

Answer 1

\[3x + 6y = 8\]
\[6y =-3x+ 8\]
\[y =-3/6x+ 8/6\]
\[y =-1/2x+ 4/3\]

Answer 2

slope =-1/2

Answer 3

y=2x-8
slope =2

Answer 4

slope 1*slope 2=\[2*\frac{ -1 }{ 2 }=-1\]

Answer 5

perpendicular