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The lines -3x + y = k and 0.5*x + y = 14 intersect when x = -2.  What is the value of k?

 Oct 1, 2020
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The lines -3x + y = k and 0.5*x + y = 14 intersect when x = -2. What is the value of k?

 

Hello Guest!

 

\(y=k+3x\\ y=14-0.5x\)

\(k+3x=14-0.5x\\ k=14-0.5x-3x\\ x=2\\ k=14-1-6\)

 

\(k=7\)

laugh  !

 Oct 1, 2020

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