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sebaxtiangb

  • one year ago

NEED HELP Given the system of equations presented here: 4x + y = 4 2x + 7y = 28 Which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? Multiply the second equation by −1 to get −2x − 7y = −28 Multiply the second equation by −4 to get −8x − 28y = −112 Multiply the first equation by −7 to get −28x − 7y = −28 Multiply the first equation by −2 to get −8x − 2y = −8

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  1. welshfella
    • one year ago
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    you need to change the value and sign of the x term or the y-term so on addition one of the variables is eliminated

  2. welshfella
    • one year ago
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    HinT: multiply the first equation by a negative number

  3. anonymous
    • one year ago
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    It is C :)

  4. anonymous
    • one year ago
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    Do you know why?

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