Question

write the equation of the line that contains the given points...
A(6,-6) B(-7,7)

Answer 1

are you sure you cant do this by yourself?

Answer 2

do you know how to find the slope?

Answer 3

yes

Answer 4

so, what is the slope?

Answer 5

it's -13

Answer 6

i would check that again

Answer 7

-1

Answer 8

thats the one

Answer 9

i emant to say

Answer 10

i had -13/13, which is -1

Answer 11

k hold on

Answer 12

now, you have to use the point slope formula, using any one of those points as (x1,y,1) and plug that into : y-y1=m(x-x1)

Answer 13

so use x1 or y1 and plug that in?

Answer 14

choose one of your ordered pairs and plug that into the formula

Answer 15

?

Answer 16

for example: (6,-6)=(X1,Y1)

Answer 17

so i wanna use x1 and x2

Answer 18

y-(-6)=-1(x-6)

Answer 19

6,-6=6,-7??????

Answer 20

now just simplify that

Answer 21

0=-1?

Answer 22

y-(-6)=-1(x-6), once you simplify this, it will give you the equation of the line that contians both given points

Answer 23

don't get it....

Answer 24

y-y1=m(x-x1)----->this is the point slope equation of a line

m---->slope

(x1,y1)------->one of the pairs of points you were given

Answer 25

so it would be y--7=m(x-6)???

Answer 26

no, you only use one of your points

Answer 27

example?

Answer 28

in your case:

m(slope)=-1

(x1,y1)=(6,-6)

y-y1=m(x-x1)

thus, plugging in our values: y-(-6)=-1(x-6)
Now simplify that: y+6=-1x+6
y=-1x, that our line

Answer 29

ok thanks

Answer 30

you can hit the good answer button if you feel like thanking me for my help