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anonymous

  • 5 years ago

how do you graph systems of equations

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  1. anonymous
    • 5 years ago
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    Place each in mx+b form

  2. anonymous
    • 5 years ago
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    i dont know how

  3. anonymous
    • 5 years ago
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    give me example, and I show you that way

  4. anonymous
    • 5 years ago
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    x+y=18

  5. anonymous
    • 5 years ago
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    Okay, you place x over on one side. y=-x+18. so, m=-1, and b = 18

  6. anonymous
    • 5 years ago
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    ok but what the slope and y intercept

  7. anonymous
    • 5 years ago
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    Okay, slope is simply rise over run. In this case, the rise (or, how high you go in the y direction) is down 1. The run (or how far you go in the x direction) is to the right 1. the y intercept is where the line cuts the y axis.

  8. anonymous
    • 5 years ago
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    so 1/1

  9. anonymous
    • 5 years ago
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    yes sir, boss man/woman

  10. anonymous
    • 5 years ago
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    twhats the x intercept

  11. anonymous
    • 5 years ago
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    No, that's where you can take any point, usually the y intercept, and go down on, and to the right one.

  12. anonymous
    • 5 years ago
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    ok but i have two the other one is 3x-y=10

  13. anonymous
    • 5 years ago
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    okay, so, get y by itself. so, it'll look like y=3x-10. Now, try to make line with that :)

  14. anonymous
    • 5 years ago
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    y=10 x= 3.33

  15. anonymous
    • 5 years ago
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    No, keep everything in y=mx+b form. So, the slope is 3/1, and the y intercept is (0,-10)

  16. anonymous
    • 5 years ago
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    okee i am really bad at this and my math teacher is really mean we had a sub so and this is some stuff i really dont understand

  17. anonymous
    • 5 years ago
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    how do you graph 80x+40y=400 and 20x+80y=420

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