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For what value of k are the graphs of y = 3x + 4 and 2y = kx + 9 parallel?

 Mar 14, 2021
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y = 3x + 4      is in y = mx + b form  where m = slope = 3    parallel slope is also 3

 

2y = kx + 9    divide by 2

y = k/2  x   + 4.5                      k/2 has to equal 3      so k = 6

 Mar 14, 2021

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