anonymous
  • anonymous
please help me :) Given the following system of equations x + y = 4k 2x = k where k is a constant Real Number, solve the system for (x, y) in terms of k. Do not replace the constant k with a numerical value. Give your solution as an ordered pair.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
\[\left\{\frac{k}{2},\frac{7 k}{2}\right\} \]
anonymous
  • anonymous
what?@robtobey
freckles
  • freckles
You can solve it by substitution the 2x=k gives you x=k/2 replace the x in the first equation with k/2 and then solve for y

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anonymous
  • anonymous
dont understand
freckles
  • freckles
do you see the x=k/2 ? This means x is k/2. Do you see the x in the first equation, the equation that is x+y=4k? This means you can place that x in that equation with k/2 .
anonymous
  • anonymous
i see that yeah and when you plug it, k/2+y=4y
anonymous
  • anonymous
ohh okay got it
freckles
  • freckles
well you replace the k with y why?
freckles
  • freckles
like the first equation was x+y=4k not x+y=4y
freckles
  • freckles
you are just to replace x with k/2 and then solve for y
anonymous
  • anonymous
okay

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