Question

Help!
Write the equation of a line through C that it parallel to AB
Writhe the equation of a line through B that is perpendicular to AC
PIC BELOW

Answer 1

@shubhamsrg think you could help me out...sorry if I tag u in alota of questions

Answer 2

what is the slope of line AB ?

Answer 3

slope is x2-x1 y2-y1 right I cant remember the formula right now

Answer 4

slope is ( y2 -y1 )/(x2 -x1)

plug in values, and tell me, what is the slope ?

Answer 5

AB=0.17

Answer 6

I meant 0.75

Answer 7

yes, 0.75 is right

now, equation of a line passing through given point and known slope is

(y-y1) = m(x-x1)

plug in m=0.75
x1 = 5
y1 = -1

Answer 8

im a little lost now... -1-5=0.74-5

Answer 9

hmm, no

it will be (y- (-1) ) = 0.75 (x - 5)

Answer 10

that's the equation??

Answer 11

or answer lol

Answer 12

yes.

Answer 13

ok thank you

Answer 14

what about the equation of a line through b that is perpendicular to AC do the same thing only use the slope for AC?

Answer 15

yes, use the slope of AC.
this time it is perpendicular, so you'll have to multiply the slope by -1and take its reciprocal.
might sound bit complicated but is easy

Answer 16

ok so slope of AC is 5 so it would be (y-(-1)=5(x-5)?

Answer 17

slope of AC is not 5,
recheck

Answer 18

is it -7

Answer 19

close, but not exactly right.
give it another try :)

Answer 20

7/-1

Answer 21

nopes,

it should be -1/7

Answer 22

ooh ok I got it I did it upside down

Answer 23

but then I do the same thing like I put above only with a 7

Answer 24

nvm,
so now this is perpendicular, so you revrse this and take its -ve
reverse = -7
negative = 7

Answer 25

ok I get theat

Answer 26

now, this line passes through (2,3)
so eqn will be (y-3) = 7(x-2)

Answer 27

oooh ok