Question

can somebody check this ? Will fan and medal

Answer 1

i think you are right. i will look in to it a bit more

Answer 2

L1, L2: neither.
the rest is ok

Answer 3

are you sure? When I plot it L1 and L2 are perpendicular

Answer 4

ok i didn't notice it at first but you are right @Loser66

Answer 5

I didn't draw them out. I use slopes to define if they are //, perpendicular, or neither

Answer 6

that's the way i did it

Answer 7

here is what I got

Answer 8

@scarlett_feathers use our ways to find the answer. We need algebra proof, not geometric one.

Answer 9

And look at your graph, what makes you think they are perpendicular?

Answer 10

true

Answer 11

the lines cross making them perpendicular

Answer 12

it is a big NNNNNO for your reply.

Answer 13

acually it is right

Answer 14

ok now i see

Answer 15

if the degree < 90, they are NOT perpendicular.

Answer 16

Strongly recommend: use slopes!!

Answer 17

okay. I will re- write the equations into slope intercept form

Answer 18

\[y=\frac{ 3 }{ 5 }x+\frac{ 2 }{ 5 }\]
\[y=-\frac{ 3 }{ 5 }x+\frac{ 4 }{ 5 }\]
\[y=\frac{ 5 }{ 3 }x+7\]

Answer 19

that should give you the right answer

Answer 20

So it is
neither
perpendicular
neither