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anonymous

  • one year ago

WILL FAN AND MEDAL A set of equations is given below: Equation H: y = −x + 2 Equation J: y = 3x − 4 Which of the following steps can be used to find the solution to the set of equations? a.−x = 3x − 4 b.−x +2 = 3x c.−x + 2 = 3x − 4 d.−x + 1 = 3x + 2

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  1. welshfella
    • one year ago
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    Hint: if y = some expression in x and y also = another expression in x then these 2 expressions are equal to each other.

  2. anonymous
    • one year ago
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    I'm lost. What do you mean?

  3. welshfella
    • one year ago
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    a simple case:- if y = a and y = b then a = b because they are both equal to y

  4. anonymous
    • one year ago
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    Ok. But how does that explain this problem?

  5. welshfella
    • one year ago
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    well look at the question y = 2 different things right - the 2 equations have 2 different expressions of x equal to y. now check out the options to see if these 2 expressions have an '=' between them

  6. anonymous
    • one year ago
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    I guess, to be honest I'm just very confused about this whole system and was wondering if somebody could take me through the steps

  7. welshfella
    • one year ago
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    well there only one step - refer back to y = a and y = b instead a theres -x + 2 and instead of b there is what? and these are equal

  8. anonymous
    • one year ago
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    b would be 3x = -4?

  9. welshfella
    • one year ago
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    no 3x - 4

  10. anonymous
    • one year ago
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    Right, sorry that's what i meant

  11. welshfella
    • one year ago
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    ok so the next step is to put these equal

  12. welshfella
    • one year ago
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    look through the options to see which one does that

  13. anonymous
    • one year ago
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    So it would be C.?

  14. welshfella
    • one year ago
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    yes

  15. welshfella
    • one year ago
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    y = -x + 2 y = 3x - 4 therefor -x + 2 = 3x - 4

  16. anonymous
    • one year ago
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    Thank you!!!!!!!!!!

  17. welshfella
    • one year ago
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    get it?

  18. welshfella
    • one year ago
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    yw

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