Question

Use the given conditions to write an equation for the line in point-slope form.

Passing through (-5, -7) and (-8, -6)

I tried to graph this and even find a slope and nothing's coming together >.<
Please show me how to solve this properly?

http://awesomescreenshot.com/08432s234c

Answer 1

Have you used the formula, y2-y1/x2-x1?

Answer 2

Yes

Answer 3

I think I got\[\frac{ 1 }{ -3 }\]

Answer 4

Ok so we need to write a equation for the line in point slope form.

Which means we want it in the form y = mx+b form.

First thing you want to do is find the slope using this formula:

\[ m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\]

(-5, -7) = (x1, y1) The (1s, and 2s are subscripts here lol)
(-8, -6) = (x2, y2)

So yes, the slope is -1/3.

Now use the point - slope formula

\[y-y _{1}=m(x-x _{1})\]

and transform it into y =mx+b form.

Answer 5

Try this now :)

Answer 6

Or I guess they just want it in point - slope form. So yeah just use the formula I showed ya.

Answer 7

\[y−y1=m(x−x1) --->y +7= -\frac{ 1 }{ 3 }(x+5)\] is that right so far? and idk what to plug into the x and the y

Answer 8

Yes!

Answer 9

Now do the same with x2 and y2, that's what they want I guess.

Answer 10

\[-6+7=-\frac{ 1 }{ 3 }(-8+5)\] ? o.o

Answer 11

No, look at your options, you already did the first part, now do the same thing y - y2=m(x-x2) you'll have to equations.

Answer 12

soooo

\[y+7=-\frac{ 1 }{ 3 }(x+5) <---...and...--->y+6=-\frac{ 1 }{ 3 }(x+8)\]

Answer 13

Yes :)

Answer 14

yay lol but o.o what do I do with it

Answer 15

oh wait nvm lol thank you very much ♥

Answer 16

lol np