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anonymous

  • 5 years ago

I need help with a slope and y intercept problem

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  1. anonymous
    • 5 years ago
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    -7=1/2y I have moved the -7 over to the other side of the = and made it positive, but what do I do next?

  2. anonymous
    • 5 years ago
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    Hmm. what was the original problem asking you to do or find?

  3. anonymous
    • 5 years ago
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    the slope and the y intercept of the line

  4. anonymous
    • 5 years ago
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    What information were you given?

  5. anonymous
    • 5 years ago
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    -7=1/2y

  6. anonymous
    • 5 years ago
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    Hmm.. ok. That's really weird. They want you to find the slope and y-intercept given that the line satisfies -7 = (1/2) y?

  7. anonymous
    • 5 years ago
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    yes

  8. anonymous
    • 5 years ago
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    is it -7 = (1/2) * y or -7 = 1/(2y)?

  9. anonymous
    • 5 years ago
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    -7=1/2y that is all it gives. no ()

  10. anonymous
    • 5 years ago
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    Is the y in the numerator or denominator?

  11. anonymous
    • 5 years ago
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    it is a fraction with y beside the line

  12. anonymous
    • 5 years ago
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    i really appreciate you helping me

  13. anonymous
    • 5 years ago
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    oh ok

  14. anonymous
    • 5 years ago
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    So that means that y is being multiplied by (1/2), one-half

  15. anonymous
    • 5 years ago
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    yes

  16. anonymous
    • 5 years ago
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    Ok, that's the same as y being in the numerator, or the top, of the fraction, but it's different than y being in the bottom of the fraction

  17. anonymous
    • 5 years ago
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    OK, so how do I clear the fraction or do I?

  18. anonymous
    • 5 years ago
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    Anyways, we want to solve for y by itself to get the equation of the line in “point-slope form” Solving for y by itself, we see that y = -14, after multiplying both sides by 2.

  19. anonymous
    • 5 years ago
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    why by 2 what happened to the fraction

  20. anonymous
    • 5 years ago
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    sorry I'm not good with this

  21. anonymous
    • 5 years ago
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    Oh ok.

  22. anonymous
    • 5 years ago
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    So suppose I said, I have some money in my bank account, and if I gave you half of that, you would have 10 dollars. So how much do I have right now?

  23. anonymous
    • 5 years ago
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    5

  24. anonymous
    • 5 years ago
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    Not quite.

  25. anonymous
    • 5 years ago
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    I didn't give you the money yet.

  26. anonymous
    • 5 years ago
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    20

  27. anonymous
    • 5 years ago
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    oh

  28. anonymous
    • 5 years ago
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    Yeah.

  29. anonymous
    • 5 years ago
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    So if I said I have money in my account. If I gave you half, you would have 1000. So how much money do I have?

  30. anonymous
    • 5 years ago
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    2000

  31. anonymous
    • 5 years ago
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    Exactly

  32. anonymous
    • 5 years ago
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    You just solved "(1/2)* y = 1000"

  33. anonymous
    • 5 years ago
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    To solve (1/2)*y = -7 for y, it's the same idea

  34. anonymous
    • 5 years ago
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    oh ok

  35. anonymous
    • 5 years ago
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    if I have +7 and divide by 2?

  36. anonymous
    • 5 years ago
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    No, when we solved for y, what did you do to the 1000? You multiplied by 2.

  37. anonymous
    • 5 years ago
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    So if (1/2) * y = -7, then to solve for y, we should multiply -7 by 2

  38. anonymous
    • 5 years ago
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    makes it -7/2

  39. anonymous
    • 5 years ago
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    If I moved the -7 to the other side of the = sign don't that make it +

  40. anonymous
    • 5 years ago
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    Well, when we multiply 7 by 2, we get 14. So multiplying -7 by 2 gives us -14.

  41. anonymous
    • 5 years ago
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    you lost me

  42. anonymous
    • 5 years ago
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    No, that's only if you're adding the -7 to the other side.

  43. anonymous
    • 5 years ago
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    I thought that is what I had to do to get y=mx + B

  44. anonymous
    • 5 years ago
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    Oh, I can see why you're confused.

  45. anonymous
    • 5 years ago
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    If A = B, then B = A.

  46. anonymous
    • 5 years ago
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    So if -7 = (1/2) * y, then (1/2) * y = -7.

  47. anonymous
    • 5 years ago
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    We didn't "move 7 to the other side of the equation" by adding it, we just rewrote the equation with the y on the left side and the 7 on the right.

  48. anonymous
    • 5 years ago
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    ?

  49. anonymous
    • 5 years ago
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    I thought when you moved it to the other side of the = you had to add or subtract it?

  50. anonymous
    • 5 years ago
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    I have to go soon. It looks like you need extra help. I don't think this site is good for you if you need more help one-on-one tutoring.

  51. anonymous
    • 5 years ago
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    ok thanks for trying

  52. anonymous
    • 5 years ago
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    But does it make sense to you that if A = B then B = A?

  53. anonymous
    • 5 years ago
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    yes

  54. anonymous
    • 5 years ago
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    What about if A = -7, then -7 = A?

  55. anonymous
    • 5 years ago
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    ok

  56. anonymous
    • 5 years ago
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    hello every1

  57. anonymous
    • 5 years ago
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    cm on chat box

  58. anonymous
    • 5 years ago
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    good luck karebear

  59. anonymous
    • 5 years ago
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    thanks

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