anonymous
  • anonymous
Write equation of the line in slope intercept form that passes through the two points (-6,-3) (-8,4)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Luigi0210
  • Luigi0210
Easy, find the slope. then plug that into the point-slope formula and solve. \[ {\big \smile } \]
anonymous
  • anonymous
again slope=-7/2 so equation of line is y=-7/2x-24
Luigi0210
  • Luigi0210
Ignore that "big smile" thing xD

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anonymous
  • anonymous
lol big smile
Luigi0210
  • Luigi0210
@quantun I hope you aren't doing the users work for them
anonymous
  • anonymous
the slope is -7/2 so i take one of those points and plug them in for y and x in the formula
Luigi0210
  • Luigi0210
Correct. I'm sure you already know how he found the slope right?
anonymous
  • anonymous
yes y2-y1/x2-x1
Luigi0210
  • Luigi0210
Good :)
anonymous
  • anonymous
kk so it should look like 4=-7/2*8+b
Luigi0210
  • Luigi0210
Where are your x and y's?
anonymous
  • anonymous
o shoot i wrote it wrong
anonymous
  • anonymous
lol
anonymous
  • anonymous
4=-7/2 -8+b y=mx+b is that right?
Luigi0210
  • Luigi0210
First you use the point slope formula, then you change it to slope-intercept form
Luigi0210
  • Luigi0210
\[y-y1=m(x-x1)\]
anonymous
  • anonymous
75.6
anonymous
  • anonymous
wait i thought we already had the slope -7/2
skullpatrol
  • skullpatrol
Let's start again please :-)
Luigi0210
  • Luigi0210
Yes, now just plug the slope and any point you choose into the equation.
anonymous
  • anonymous
o lol
anonymous
  • anonymous
so y- -3=-7/2(x- -6)
Luigi0210
  • Luigi0210
Yes, now just simplify :)
anonymous
  • anonymous
kk
skullpatrol
  • skullpatrol
y- (-3)=-7/2(x- (-6))
anonymous
  • anonymous
i got y-(-3)=-7/2x+21 is that right and i just add the 3 to both side get rid of it right?
Luigi0210
  • Luigi0210
Hm, you made an error with your signs.
anonymous
  • anonymous
o it should be a negative 21
Luigi0210
  • Luigi0210
Yup, and when you have a --, it'd be easier to just change them into a + right away so it doesn't confuse you
anonymous
  • anonymous
o kk lol so make the negative 3 a positive 3 and subtract from both sides
Luigi0210
  • Luigi0210
Bingo!
anonymous
  • anonymous
i got y=-7/2+8
anonymous
  • anonymous
it will be -24
Luigi0210
  • Luigi0210
8? xD
Luigi0210
  • Luigi0210
Oh Miss Jessica :3
anonymous
  • anonymous
lol i was typing to fast and hit 8 sry
anonymous
  • anonymous
i meant -24 :)
Luigi0210
  • Luigi0210
Hm, well alright Good job!
anonymous
  • anonymous
thank you everybody
Luigi0210
  • Luigi0210
You may have been here for a bit already but...
Luigi0210
  • Luigi0210
\[\Huge{\color{purple}{\textbf{W}} \color{orange}{\cal{E}} \color{green}{\mathbb{L}} \color{blue}{\mathsf{C}} \color{maroon}{\rm{O}} \color{red}{\tt{M}} \color{gold}{\tt{E}} \space \color{orchid}{\mathbf{T}} \color{Navy}{\mathsf{O}} \space \color{OrangeRed}{\boldsymbol{O}} \color{Olive}{\mathbf{P}} \color{Lime}{\textbf{E}} \color{DarkOrchid}{\mathsf{N}} \color{Tan}{\mathtt{S}} \color{magenta}{\mathbb{T}} \color{goldenrod}{\mathsf{U}} \color{ForestGreen}{\textbf{D}} \color{Salmon}{\mathsf{Y}} \ddot \smile } \]
anonymous
  • anonymous
lol what is that
anonymous
  • anonymous
O thx XD
anonymous
  • anonymous
its really cool

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