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itsjustme_lol Group Title

Change the given equation into slope-intercept form. 4x – 3y = -12

  • 2 years ago
  • 2 years ago

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  1. jiji501 Group Title
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    Do you know the equation for the slope-intercept form?

    • 2 years ago
  2. itsjustme_lol Group Title
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    no this is a pretest so i havent learned it exactly yet

    • 2 years ago
  3. jiji501 Group Title
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    Ok!

    • 2 years ago
  4. jiji501 Group Title
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    The slope-intercept form is: y= ax+b

    • 2 years ago
  5. jiji501 Group Title
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    As you can see, we're trying to isolate the y on one side and bring everything else to the other.

    • 2 years ago
  6. jiji501 Group Title
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    The y is also positive and has only one of them ( So there is not 2y = ax + b for example)

    • 2 years ago
  7. itsjustme_lol Group Title
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    ok

    • 2 years ago
  8. itsjustme_lol Group Title
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    im still confused

    • 2 years ago
  9. jiji501 Group Title
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    Let's do it step by step. Can you make your y by itself? (Bring the x over)

    • 2 years ago
  10. itsjustme_lol Group Title
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    ok. and no, i dont know how to do any of it. Im new to this kind of stuff and its confusing lol

    • 2 years ago
  11. jiji501 Group Title
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    I'll give you a simple equation x + 1 = 5

    • 2 years ago
  12. jiji501 Group Title
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    Would it be mathematically correct to say that x = 4? Because x+1-1 = 5-1

    • 2 years ago
  13. itsjustme_lol Group Title
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    yes

    • 2 years ago
  14. jiji501 Group Title
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    Exactly! So it is the same thing here but we add something harder. We have to move variables to the other side as well!

    • 2 years ago
  15. jiji501 Group Title
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    4x -3y = 12 Would it be correct to say that 4x-4x-3y = 12-4x ???

    • 2 years ago
  16. jiji501 Group Title
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    So -3y = 12-4x?

    • 2 years ago
  17. itsjustme_lol Group Title
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    ok but whats next?

    • 2 years ago
  18. itsjustme_lol Group Title
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    -3/2?

    • 2 years ago
  19. jiji501 Group Title
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    Well as you can see, we've already isolated the y. What we want to do is get only one y and to make it positive.

    • 2 years ago
  20. jiji501 Group Title
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    How do we get rid of the -3 in front of y?

    • 2 years ago
  21. itsjustme_lol Group Title
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    divide it by 3?

    • 2 years ago
  22. jiji501 Group Title
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    By -3, close ;)

    • 2 years ago
  23. jiji501 Group Title
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    So now... y = ?

    • 2 years ago
  24. itsjustme_lol Group Title
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    1

    • 2 years ago
  25. jiji501 Group Title
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    Well there is one y but I mean what is on the other side of y

    • 2 years ago
  26. jiji501 Group Title
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    what is 12/-3 and -4x/-3

    • 2 years ago
  27. itsjustme_lol Group Title
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    -4 is the first one, the other us a decimal 1.33 repeating

    • 2 years ago
  28. jiji501 Group Title
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    Correct. You could also leave it as a fraction.

    • 2 years ago
  29. jiji501 Group Title
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    So y = 4/3x -4

    • 2 years ago
  30. jiji501 Group Title
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    That would be your answer. 4/3 is the slope and -4 is the y-intercept

    • 2 years ago
  31. pottersheep Group Title
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    It has to be in y = mx + b form

    • 2 years ago
  32. itsjustme_lol Group Title
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    • 2 years ago
  33. itsjustme_lol Group Title
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    so it would be D?

    • 2 years ago
  34. jiji501 Group Title
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    We just did it together....y = 4/3x -4

    • 2 years ago
  35. jiji501 Group Title
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    You said it yourself.... -4!!!

    • 2 years ago
  36. itsjustme_lol Group Title
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    lol. sorry i meant C. thankyouuuu

    • 2 years ago
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