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anonymous

  • 5 years ago

y=mx+b so how does that work with x+ 2y=7?

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  1. anonymous
    • 5 years ago
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    solve for y 2y = 7 - x y = (7 - x)/2

  2. anonymous
    • 5 years ago
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    ^ Correct: y = -1/2(x) +7/2 Therefore, m = -1/2 b = 7/2

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

  4. anonymous
    • 5 years ago
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    did that help, help needed?

  5. anonymous
    • 5 years ago
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    Oiler, it's 7/2, not -7/2

  6. anonymous
    • 5 years ago
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    Yes, it's what we put for the equation, but we don't understand how to graph that and don't know how to use the online grapher we looked at

  7. anonymous
    • 5 years ago
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    of course, y = 7/2 - x/2 y = -x/2 + 7/2

  8. anonymous
    • 5 years ago
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    Here's a way to graph the original form: ...

  9. anonymous
    • 5 years ago
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    Ok, we graphed that line, but it's not intersecting with the other equation 3x+y =6

  10. anonymous
    • 5 years ago
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    put in zero for x, 0 + 2y = 7, y = 7/2, gives the point (0,3.5) put in zero for y, x + 0 = 7, x = 7, gives the point (7,0) Real easy, without solving for y

  11. anonymous
    • 5 years ago
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    For 3x+y =6 put in zero for x, 0 + y = 6, y = 6, gives the point (0,6) put in zero for y, 3x + 0 = 6, x = 2, gives the point (2,0) Real easy, without solving for y

  12. anonymous
    • 5 years ago
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    I'm trying it out

  13. anonymous
    • 5 years ago
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    You're getting a medal, it worked!

  14. anonymous
    • 5 years ago
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    Nice job oiler :D

  15. anonymous
    • 5 years ago
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    You too! Thanks so much.

  16. anonymous
    • 5 years ago
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    Oiler are you still there?

  17. anonymous
    • 5 years ago
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    2x+3y=11 (0, 11/3) 3x-2y=_16 (0,8) how do I graph 11/3?

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spraguer (Moderator)
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