7. 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

Question

7. 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

thefluffmuncher · Answer

not sure but i think it's c

dtan5457 · Answer

Simplify the first one to 

6y=8-3x

y=8/6-1/2x
y=2x-8

First one's slope is -1/2x and 2nd slope is 2x

Parallel=same slope
perpendicular=reciprocal and negation of original slope

Which one is it?

dtan5457 · Answer

"perpendicular=reciprocal and negation of original slope"

For example, if a slope was 1/5, the perpendicular slope would be -5/1

thefluffmuncher · Answer

so it's perpendicular

dtan5457 · Answer

yes.

thefluffmuncher · Answer

8. Which of the following has a slope of –2 and a y-intercept of 4?
(Points : 4)
       y = –2x + 4
       y = 2x + 4
       y = 2x – 4
       y = –2x – 4

thefluffmuncher · Answer

i'm pretty sure it's a on this one

dtan5457 · Answer

Correct.

dtan5457 · Answer

Anymore questions?

thefluffmuncher · Answer

don't think so thanks for the useful help :)

dtan5457 · Answer

Np. Feel free to medal and fan and tag me into future questions :)