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teddygirl

  • 3 years ago

What is the solution of the system? Use substitution. 2x - y = -7 and 4x- y = -4 (–1.5, 4) (1.5, 10) (4, –1.5) (–1.5, –2) 2. What is the solution of the system? Use elimination 5x +7y = 32 and 8x +6y = 46 (8, 5) (1, 5) (7, 0) (5, 1)

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  1. pfenn1
    • 3 years ago
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    \[2x - y = -7 \]\[ 4x- y = -4\]Rearrange the first equation to solve for y, then substitute into the second sentence for y. Then solve for x.

  2. teddygirl
    • 3 years ago
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    I got (1.5, 10) and (8,5) but i dont think they are right

  3. pfenn1
    • 3 years ago
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    I haven't calculated the second problem yet but my answer for the first problem is the same as yours. Sounds like you are doing it correctly.

  4. teddygirl
    • 3 years ago
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    Oh Okay!

  5. pfenn1
    • 3 years ago
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    Hmm. I got another answer to the second question.

  6. teddygirl
    • 3 years ago
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    I did too, I got 5,1

  7. pfenn1
    • 3 years ago
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    Yeah, that's what I got.

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