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dumbsearch

  • 2 years ago

Solve the following system using the substitution method: 6x - 2y = -4 y = 3x + 2

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  1. Hero
    • 2 years ago
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    http://openstudy.com/study#/updates/50f97f9ee4b007c4a2ec1b2c

  2. dumbsearch
    • 2 years ago
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    but how would I go about it in this case?

  3. dumbsearch
    • 2 years ago
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    what would the solution be like?

  4. Hero
    • 2 years ago
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    In this case, substitute the expression 3x + 2 into the first equation to get: 6x - 2(3x + 2) = -4 Then simplify and isolate x. Afterwards, find the value of y.

  5. dumbsearch
    • 2 years ago
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    thx but look here: http://www.wolframalpha.com/input/?i=6x+-+2%283x+%2B+2%29+%3D+-4

  6. dumbsearch
    • 2 years ago
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    is it Inconsistent? Dependent? or are the coordinates? what would the answer be like? thx so much!

  7. Hero
    • 2 years ago
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    Actually, the first thing I usually do before using any method is to simplify equations when necessary. We can simplify the first equation. When we do that we get: 3x - y = 2 That can be manipulated to get 3x + 2 = y Which so happens to be the same line as the second equation. So no need to use substitution method since both equations are actually the same.

  8. dumbsearch
    • 2 years ago
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    so which coordinate would that be? or would it be Inconsistent or Dependent? thx by the way for your time. :D

  9. Callisto
    • 2 years ago
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    Keywords: "since both equations are actually the same. "

  10. dumbsearch
    • 2 years ago
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    so Inconsistent or Dependent?

  11. Callisto
    • 2 years ago
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    Inconsistent is like... x+y = 1 and x + y =5 Dependent is like... x+y = 1 2x + 2y= 2 Any guess?

  12. dumbsearch
    • 2 years ago
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    Nope I'm bricked... :( Can you PLEASE provide the response! :(

  13. dumbsearch2
    • 2 years ago
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    what's the graphing lines? what's the coordinates? or is it dependent? or inconsistent?

  14. dumbsearch2
    • 2 years ago
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    Look here:

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