Question

can someone teach me how to determine if a line is para or perp or neither
l1 y=x-3
l2 y=1-x

Answer 1

What is the slope of each line

Answer 2

for slope is it y=mx+b

Answer 3

that's the slope intercept form

m is your slope

Answer 4

i dont get it, so was looking for examples on how to set the problem up

Answer 5

y=x-3

is the same as

y=1x-3

Answer 6

y = 1x - 3

is in the form y = mx+b where m = 1, b = -3

Answer 7

so the slope of y = x-3 is 1

Answer 8

what's the slope of y = 1 - x

Answer 9

what happens when x is not the like for line 2 will it still be 1?

Answer 10

well

y = 1 - x

is the same as

y = -x + 1

which is the same as

y = -1x + 1

Answer 11

is that a rule?

Answer 12

the slope of this is what?

Answer 13

yes

Answer 14

once you set it up like this do we do m=y2-x2/y1-x2

Answer 15

no need for that since we can easily pick out the slope

Answer 16

the m is the slope so its 1 and -1?

Answer 17

are those slopes the same

Answer 18

no

Answer 19

para would be same and perp will be different?

Answer 20

parallel lines would have equal slopes

Answer 21

perpendicular lines would have 2 slopes that multiply to -1

Answer 22

so

1 times -1 = -1

which means that these two lines are perpendicular

Answer 23

what would make it neither?

Answer 24

thanks for explaining it by the way

Answer 25

if the slopes were different AND they didn't multiply out to -1