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anonymous

  • 5 years ago

y = 1/2x - 6 2x + 6y = 19 with either elimination substitution or graphing. Thanks :) these three ways of solving are really confusing

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  1. anonymous
    • 5 years ago
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    Let us take one at a time..... Substitution This is the easiest of all IF on of the equations is given as y = something. In the above case, it is. So, you take that value of y and substitute it (therefore the word substitution) in the second equation. 2x + 6(1/2*x - 6) = 19 Now, you have an equation in x that can be solved to figure out x. Then, use y = 1/2*x = 6 to figure out value of y.

  2. anonymous
    • 5 years ago
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    ? * ?

  3. anonymous
    • 5 years ago
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    Then do i solve 2x + 6 (1/2x -6) = 19? 2x + 3x -6 = 19? 5x -6 = 19? 5x = 13? or is it 5x = 25?

  4. anonymous
    • 5 years ago
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    It is 36 (6 * 6) like this: 2x + 3x -36 = 19?

  5. anonymous
    • 5 years ago
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    oh yeah 6 * 6 ! so then what i was doing before but with the 36 instead?

  6. anonymous
    • 5 years ago
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    Correct. Also, check my reply to that other question about elimination. Hope that helps.

  7. anonymous
    • 5 years ago
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    I would subtract 36 from 19 right ?

  8. anonymous
    • 5 years ago
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    or no add..

  9. anonymous
    • 5 years ago
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    Add because when you have -36 and take it to the other side, you add.

  10. anonymous
    • 5 years ago
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    Okay that makes sense

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