Question

determine if the line containing points a and b is perpendicular, parallel or neither to the line containing points c and d.

A (4,0) B (1,9) C (5,3) D(0,6)

Answer 1

find the slope of the line connecting the points A and B
find the slope of the line connecting the points C and D
post your answer here.

Answer 2

do you know how to find the slope when two points are given?

Answer 3

IS SLOPE 3
LINE C,D 3/5

Answer 4

-3/5

Answer 5

the slope of line CD is -3/5
what is the slope of the line AB?

Answer 6

3

Answer 7

sure? it is (9-0)/(1-4)

Answer 8

-3

Answer 9

okay good
so what is the condition for two lines to be parallel and perpendicular to each other?

Answer 10

HAVE SAME SLOPE

Answer 11

you have to be more specific than that. what are you talking about?

Answer 12

SO ITS PARALLEL

Answer 13

okay, the lines are parallel if the slopes are the same.
is -3 equal to -3/5?

Answer 14

NO

Answer 15

idk thats the part i get confused on

Answer 16

okay, the two slopes are not the same. there fore the two lines are not parallel.
now, what is the condition for two lines to be perpendicular?

Answer 17

their slope are negative reciprocal of each other

Answer 18

okay so what is the negative reciprocal of -3?

Answer 19

-3/1

Answer 20

no, try again. if x is your number, -(1/x) is its negative reciprocal

Answer 21

so if -3 is your number, what is its negative reciprocal?

Answer 22

-1/3

Answer 23

no! it is -(1/(-3)) = 1/3.
so, is 1/3 equal to -3/5?

Answer 24

no

Answer 25

so then the lines are not perpendicular. So your answer is the lines are neither parallel nor perpendicular to each other.

Answer 26

k i thnk i get it sorry kinda a slow today appreciate your patience:) gonna try these other similiar problems thanks again....

Answer 27

okay you are welcome.