SOLUTION: for what values of k will make the system 5x-2y+7=0 and 10x-4y+k=0 dependent?

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Question 418031: for what values of k will make the system 5x-2y+7=0 and 10x-4y+k=0 dependent?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the 1st equation by 2 to get 10x - 4y + 14 = 0. Since this had to be equivalent to 10x - 4y + k = 0, let k = 14. This value of k will make the system dependent.