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sawq

  • one year ago

Will fan and medal best help! Which of the following ordered pairs represents the solution to the system given below? 2x + y = 20 4x − 2y = 40 (10, 0) (0, 10) (4, 2) (10, −10) I know what to do I'm just not getting any of the answers given.. help?

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  1. dan815
    • one year ago
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    okay well u see, you can always plug in a point to see if its working

  2. dan815
    • one year ago
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    the first point simply works (10,0) means x=10 and y=0

  3. dan815
    • one year ago
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    2x + y = 20 4x − 2y = 40 ------------- 2*10+0=20 4*10 - 2*0 = 40 ---------------- so right away (10,0) works

  4. dan815
    • one year ago
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    To actually solve this system of equations, u have to learn substitution or elimination methods, please look that up

  5. sawq
    • one year ago
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    Yeah I just learned that but its not working out...

  6. sawq
    • one year ago
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    But thanks for your help

  7. dan815
    • one year ago
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    sure

  8. dan815
    • one year ago
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    I can check your work, if u post it here, good luck

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spraguer (Moderator)
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