Question

Check my answers? WILL GIVE MEDAL

Answer 1

@Euler271

Answer 2

@DavidUsa

Answer 3

Do you know how to find whether two lines are perp or par?

Answer 4

Yep, I looked them up. None of them are parallel because none of the slopes match.
As for perpendicular... I subtracted the slopes and that is what I was trying to figure out if i did that correctly or do i divide them.
They're perpendicular if it equals -1

Answer 5

yes if the m1*m2=-1 they are perp

Answer 6

oh, i multiply them, okay. let me redo it.
what about the next question? is that right?

Answer 7

m1=-3/5
m2=-5/3
m3=5/3

Answer 8

yes the next one is correct

Answer 9

cool, I got it. The middle one (1&2) are perp.