Question

help please with slopes

Answer 1

Line AB contains (0, 4) and (1, 6) Line CD contains points (2, 10) and (-1, 4). Lines AB and CD are (4 points)


parallel, because the slopes are the same
perpendicular, because the slopes are the same
parallel, because the product of the slopes is -1
perpendicular, because the product of the slopes is -1

Answer 2

this is what i got for AB

Answer 3

CD

Answer 4

Well do you think these points intersect and any time?

Answer 5

For it to be perpendicular it needs to intersect and make a right angle.

Answer 6

nvm sry it isnt the perpendicular ones its one of the parallel answers am i correct

Answer 7

@undeadknight26 am i correct?

Answer 8

Yes you are correct.

Answer 9

then correct me if i am wrong ,i got c

Answer 10

For the slope to be -1 the lines would have to be going down not up.

Answer 11

ok

Answer 12

thx now i know the anwser

Answer 13

a

Answer 14

so I believe correct me if I am mistaken others viewing question.

Answer 15

their 5 more of u can u guys give use ur opinion too

Answer 16

us'

Answer 17

@undeadknight26 true for slope to be -1 the line would be top left to bottom right but here the product of the slope is -1 condition for perpendicular lines

Answer 18

so it will be d?

Answer 19

the main lesson is:
parallel lines have the same slope
for perpendicular lines the product of the slopes is -1

Answer 20

Interesting! Thank you!

Answer 21

Slope of AB
\[\Large m = \frac{y_2 - y_1}{x_2 - x_1}\]
\[\Large m = \frac{6-4}{1-0}\]
\[\Large m = \frac{2}{1}\]
\[\Large m = 2\]


Slope of CD
\[\Large m = \frac{y_2 - y_1}{x_2 - x_1}\]
\[\Large m = \frac{4-10}{-1-2}\]
\[\Large m = \frac{-6}{-3}\]
\[\Large m = 2\]


Slope of AB = slope of CD
So the two lines are parallel because of this reason

Answer 22

so it was a all along? i am very confused

Answer 23

forget about the answer choices and reread the thread. if you are still confused let us know

Answer 24

will do

Answer 25

acsualy im sure i do

Answer 26

it is anwser choice c

Answer 27

wow it was #1 triciaal jim was correct all along

Answer 28

Jim told you the slopes are the same...