anonymous
  • anonymous
find the equation of the line in slope intercept form, that passes through (4,-1) and (6,-2) can someone help me please :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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myininaya
  • myininaya
Do you know what slope intercept form is?
anonymous
  • anonymous
yes, when i did it i got \[y= -\frac{ 1 }{ 2 }x+\frac{ 7 }{ 2 }\]
myininaya
  • myininaya
The slope is right...Checking the y-intercept now...

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anonymous
  • anonymous
ok
myininaya
  • myininaya
You should retry to find the y-intercept. It is incorrect. Start here: y=mx+b where m=-1/2 y=-1/2 * x +b Use one of the points gven to plug in for x and to plug in for y.
myininaya
  • myininaya
Either use (4,-1) or (6,-2) but don't mix and match
anonymous
  • anonymous
i got 1
myininaya
  • myininaya
yes b=1
anonymous
  • anonymous
so if i were to show my work on a homework assignment i would find the slope and then put it in point slope form? or just plug it back into the equation in slope intercept
myininaya
  • myininaya
Either way.
anonymous
  • anonymous
because when i did it in point slope form like my teacher said i did not get one i got 7/2
myininaya
  • myininaya
Then you did it incorrectly. You found the slope m=-1/2 Plug it in y-y1=m(x-x1) Don't forget to distribute y-y1=mx-mx1
myininaya
  • myininaya
add y1 on both sides y=mx-mx1+y1
anonymous
  • anonymous
yeah i got it now. and one more question standard form is ax+by=c right?
myininaya
  • myininaya
Yes.
anonymous
  • anonymous
okay because my book said ax+by+c=0 and my teacher said ax+by=c
myininaya
  • myininaya
Go with what your teacher said. Either one is fine. Both of those forms don't differ a whole a lot. All my math life, I have prefered the slope-intercept form.
myininaya
  • myininaya
Your teacher will be grading you and it is their preference in what form they want the answer.
anonymous
  • anonymous
okay thank you so much :)

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