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victoriarose88

find the equation of the line in slope intercept form, that passes through (4,-1) and (6,-2) can someone help me please :)

  • one year ago
  • one year ago

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  1. myininaya
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    Do you know what slope intercept form is?

    • one year ago
  2. victoriarose88
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    yes, when i did it i got \[y= -\frac{ 1 }{ 2 }x+\frac{ 7 }{ 2 }\]

    • one year ago
  3. myininaya
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    The slope is right...Checking the y-intercept now...

    • one year ago
  4. victoriarose88
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    ok

    • one year ago
  5. myininaya
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    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.

    • one year ago
  6. myininaya
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    Either use (4,-1) or (6,-2) but don't mix and match

    • one year ago
  7. victoriarose88
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    i got 1

    • one year ago
  8. myininaya
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    yes b=1

    • one year ago
  9. victoriarose88
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    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

    • one year ago
  10. myininaya
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    Either way.

    • one year ago
  11. victoriarose88
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    because when i did it in point slope form like my teacher said i did not get one i got 7/2

    • one year ago
  12. myininaya
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    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

    • one year ago
  13. myininaya
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    add y1 on both sides y=mx-mx1+y1

    • one year ago
  14. victoriarose88
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    yeah i got it now. and one more question standard form is ax+by=c right?

    • one year ago
  15. myininaya
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    Yes.

    • one year ago
  16. victoriarose88
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    okay because my book said ax+by+c=0 and my teacher said ax+by=c

    • one year ago
  17. myininaya
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    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.

    • one year ago
  18. myininaya
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    Your teacher will be grading you and it is their preference in what form they want the answer.

    • one year ago
  19. victoriarose88
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    okay thank you so much :)

    • one year ago
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