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krissywatts

  • 2 years ago

what are the coordinates? for y=2x-5 x-2y=-8

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  1. zepdrix
    • 2 years ago
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    Let's solve this system using substitution. \[\large \color{royalblue}{y=2x-5}\]\[\large x-2\color{royalblue}{y}=-8 \qquad \rightarrow \qquad x-2\color{royalblue}{(2x-5)}=-8\] From here, we can solve for x since that is the only variable in our equation.

  2. zepdrix
    • 2 years ago
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    Understand how I plugged that in? :o

  3. krissywatts
    • 2 years ago
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    yeah you want to solve for x correct?

  4. zepdrix
    • 2 years ago
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    yes c: If we solve for x, we can plug that x value into one of the two equations to find a corresponding y value. That will be the coordinate pair we were looking for.

  5. krissywatts
    • 2 years ago
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    i get (6,7) :) thanks for your help

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