anonymous
  • anonymous
what is the equation of a line that has a slope of -1 and passes through the point(-3,12)??
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Mertsj
  • Mertsj
Do you know point slope form of the equation of a line?
anonymous
  • anonymous
no
Mertsj
  • Mertsj
\[y-y _{1}=m(x-x _{1})\]

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anonymous
  • anonymous
dont i need two points??
Mertsj
  • Mertsj
replace ysub1 with 12. replace m with -1. replace xsub1 with -3 and solve for y
anonymous
  • anonymous
ok im a little lost now
anonymous
  • anonymous
wont i still have x?
Mertsj
  • Mertsj
\[y-12=-1(x- -3)\]
Mertsj
  • Mertsj
\[y-12=-1(x+3)\]
Mertsj
  • Mertsj
\[y-12=-x-3\]
Mertsj
  • Mertsj
y=-x+9
anonymous
  • anonymous
ohhh ok i understand now thanks again..
Mertsj
  • Mertsj
And that is the equation of a line whose slope is -1 and passes through the point (-3,12).

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