caishaax3
  • caishaax3
Write the equation of the line that passes through (–1, 5) and has a slope of 3 in point-slope form.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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caishaax3
  • caishaax3
A. y=3x+2 B. y=3x+8 C. y=-3x-2 D. y=-3x+8
anonymous
  • anonymous
Point slope-formula: \[y-y_{1}=m(x-x _{1})\]
anonymous
  • anonymous
(-1,5) is the\[\left( x _{1},y _{1} \right)\]

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anonymous
  • anonymous
And m=3
anonymous
  • anonymous
Plug them in.
anonymous
  • anonymous
|dw:1438132689777:dw|
caishaax3
  • caishaax3
i some how ended up with y=8x
anonymous
  • anonymous
Oh you shouldn't add 5 and 3x. :)
anonymous
  • anonymous
What is 3(x+1)?
anonymous
  • anonymous
Any answers?
caishaax3
  • caishaax3
x+1 is just x so wouldnt it be just 3x?
anonymous
  • anonymous
|dw:1438133039031:dw|
anonymous
  • anonymous
You forgot to multiply 3 and 1. :)
caishaax3
  • caishaax3
3 times 1 is 3 not 1 though
anonymous
  • anonymous
|dw:1438133216169:dw|
anonymous
  • anonymous
My work here is done. You should know the answer by now. :D
caishaax3
  • caishaax3
now do i move the 5 over by adding it to both sides
anonymous
  • anonymous
Yes!
caishaax3
  • caishaax3
giving me y=3x+8?
anonymous
  • anonymous
You got it correct! A click on the "best response" is highly appreciated. :D
caishaax3
  • caishaax3
thank you

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