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lily43 Group Title

What is the equation of the lne that passes through points (5,4) and (-2,0)?

  • one year ago
  • one year ago

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  1. akhaliq99 Group Title
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    rise/run

    • one year ago
  2. akhaliq99 Group Title
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    first find slope

    • one year ago
  3. akhaliq99 Group Title
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    then use y=mx+b

    • one year ago
  4. akhaliq99 Group Title
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    subsitute slope

    • one year ago
  5. akhaliq99 Group Title
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    and then find y intercept

    • one year ago
  6. mathstudent55 Group Title
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    Call point (5, 4) = (x1, y1), and call point (-2, 0) = (x2, y2) Slope = m = (y2 - y1)/(x2 - x1) The equation of the line is: y - y1 = m(x - x1)

    • one year ago
  7. akhaliq99 Group Title
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    he has point slope form

    • one year ago
  8. akhaliq99 Group Title
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    both can be used though

    • one year ago
  9. lily43 Group Title
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    ok. thank u. :)

    • one year ago
  10. lily43 Group Title
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    can u check if im doing it right because i feel like i messed up somewhere?

    • one year ago
  11. mathstudent55 Group Title
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    Sure. Show what you did.

    • one year ago
  12. lily43 Group Title
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    i found the slope using m= Y2-Y1/X2-X1. i got 4/7

    • one year ago
  13. mathstudent55 Group Title
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    Correct, m = 4/7

    • one year ago
  14. lily43 Group Title
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    then i plugged it in y=mx+b. so now i have y=4/7x+b.

    • one year ago
  15. lily43 Group Title
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    i plugged in point (5,4) sonow i have 4=4/7x5+b

    • one year ago
  16. lily43 Group Title
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    then i got 4=20/7+b.thats were im not sure if im right.

    • one year ago
  17. mathstudent55 Group Title
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    |dw:1359950617065:dw| Correct

    • one year ago
  18. lily43 Group Title
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    so if i keep solving it the equation would be y=4/7x+1 1/7

    • one year ago
  19. mathstudent55 Group Title
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    |dw:1359950765775:dw|

    • one year ago
  20. mathstudent55 Group Title
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    |dw:1359950864531:dw|

    • one year ago
  21. lily43 Group Title
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    i got 8/7 to but turned it into 1 and 1/7

    • one year ago
  22. mathstudent55 Group Title
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    You can leave it as 8/7. Your solution is also correct, but it's not usually left with a mixed numeral.

    • one year ago
  23. lily43 Group Title
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    ok. thank u

    • one year ago
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