MaeganR
  • MaeganR
#14. Write an equation of a line that has the slope of -1/2 in each form. a. point-slope form b. slope-intercept form
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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MaeganR
  • MaeganR
@erdog82 @Butterfly16 @chihiroasleaf
anonymous
  • anonymous
First, I believe you have to decide what points you want to use to get the slope of -1/2
MaeganR
  • MaeganR
|dw:1358117562513:dw|

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MaeganR
  • MaeganR
could this help me?
anonymous
  • anonymous
some points could be (4,-1) (6,-2)
MaeganR
  • MaeganR
so how do i write an equation of a line that has a slope of -1/2 in point-slope form, and slope-intercept form.
anonymous
  • anonymous
well what is y1
MaeganR
  • MaeganR
-1 ?
anonymous
  • anonymous
yup, so so far we have y+1= -1/2 x - x1 what is x1?
MaeganR
  • MaeganR
4
MaeganR
  • MaeganR
?
anonymous
  • anonymous
yup, so then we have y+1=-1/2 x -4
MaeganR
  • MaeganR
thats it for a? we don't have to solve?! now how do we do b? y=mx+b
anonymous
  • anonymous
what did you have to do for 13 on your last question?
MaeganR
  • MaeganR
what do you mean?
anonymous
  • anonymous
you have to subtract 1 from -4
MaeganR
  • MaeganR
so its -5
anonymous
  • anonymous
so then what do you get?
MaeganR
  • MaeganR
-5 ?
anonymous
  • anonymous
so then its y=-1/2 x - 5
anonymous
  • anonymous
and your done!
MaeganR
  • MaeganR
now i have 10 problems of standard form to do and 15 problems to do of parallel and perpendicular lines but i don't want to keep bothering you.
anonymous
  • anonymous
oh, don't worry, it will help me! I am in "Enriched Algebra" and I just learned that, and I understand it really well - helping you will help me study and practice!

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