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anonymous

  • 5 years ago

how to rewrite the equation in function form. 7+7x=8

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  1. anonymous
    • 5 years ago
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    are you sure you posted the question correctly?

  2. anonymous
    • 5 years ago
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    oops y+7x=8

  3. M
    • 5 years ago
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    y = -7x + 8

  4. M
    • 5 years ago
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    y = f(x) = -7x + 8

  5. anonymous
    • 5 years ago
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    8y-16x=4

  6. M
    • 5 years ago
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    y = (4 +16x)/8

  7. M
    • 5 years ago
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    you just want to isolate y

  8. anonymous
    • 5 years ago
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    ok, don;t understand the/8

  9. M
    • 5 years ago
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    it's a function becuase you can plug in for x and you'll get a function of x or a y

  10. M
    • 5 years ago
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    this is how you will plot points on xy plane graph

  11. M
    • 5 years ago
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    plug in for x coordinates and you get y coordinates

  12. M
    • 5 years ago
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    when they ask you to rearrange in function for then just solve for y lol

  13. anonymous
    • 5 years ago
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    tell wether the ordered pair is a solution of the equation? 7=3x+4;(1,6)

  14. M
    • 5 years ago
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    yes it is

  15. M
    • 5 years ago
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    when you see (1, 6) that usually means (x, y)

  16. M
    • 5 years ago
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    plug in 1 for x then 7 = 3 (1) + 4

  17. anonymous
    • 5 years ago
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    ok don't laugh at me heres another one, 7=-5x=2;(-3,-13)

  18. M
    • 5 years ago
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    you wrote it wrong i think

  19. anonymous
    • 5 years ago
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    y=-5x=2

  20. M
    • 5 years ago
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    no

  21. M
    • 5 years ago
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    -5(-3) = 15

  22. M
    • 5 years ago
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    y = -13 so it's wrong

  23. anonymous
    • 5 years ago
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    ok get it. how bout this 1. Your science class wants to visit an aquarium. Tickets cost $12.95/person. You also need to pay for the bus, which is $120. use the equation C=12.95p+120. where C is the total cost of the trip and p is the number of people going. If the final cost is $767.50, how many people went on the trip?

  24. M
    • 5 years ago
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    just plug in 767.50 for C

  25. M
    • 5 years ago
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    then solve for p

  26. M
    • 5 years ago
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    (767.50 - 120)/12.95 = p

  27. anonymous
    • 5 years ago
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    o ok, thank you sooooo much

  28. M
    • 5 years ago
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    p = 50

  29. M
    • 5 years ago
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    ok good luck :)

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