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InsanelyChaotic

  • 3 years ago

There is no solution to the system below. x + 3y = 7 2x + 6y = 9 True False

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  1. timo86m
    • 3 years ago
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    sove the system by your favorite method :)

  2. timo86m
    • 3 years ago
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    and then you'll see if there is no solution

  3. InsanelyChaotic
    • 3 years ago
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    I got TRUEEEEEEEEEEEEEEEE

  4. timo86m
    • 3 years ago
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    I dont think so :(

  5. InsanelyChaotic
    • 3 years ago
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    oops:(((

  6. timo86m
    • 3 years ago
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    here is another method since this is a simple 2 equations and 2 variables x + 3y = 7 2x + 6y = 9 solve each equation for y y = -(1/3)*x+7/3 y = -(1/3)*x+3/2 as you can see it will be in the y=mx + b form the m aka slopes are the same. which means they dont meet ever. and the bs are different. therefore no solution. When Ms are same and Bs are different.

  7. yakeyglee
    • 3 years ago
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    If you're familiar with determinants, you can calculate \[\begin{vmatrix} 1 & 3 \\ 2 & 6\end{vmatrix} = (1)(6)-(3)(2) = 0,\] so there is no solution.

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