SOLUTION: Find k such that ky + 2y + x +7 = 0 is a vertical line.

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Question 642708: Find k such that ky + 2y + x +7 = 0 is a vertical line.
Found 2 solutions by KMST, Century:
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
The equation for a vertical line is x=k for a constant k (or any equivalent equation).
There is no y.
ky+%2B+2y+%2B+x+%2B7+=+0 <---> %28k%2B2%29y%2Bx%2B7=0
For y not to be involved, it must be
k%2B2=0 --> highlight%28k=-2%29
Then, the equation for the line is x%2B7=0 <---> x=-7,

Answer by Century(7) About Me  (Show Source):
You can put this solution on YOUR website!
All vertical lines have equations of the formx=some+number+
Knowing this tells us that we need to make the value of k such that
it is the opposite of the value of the coefficient of the other expression
involving y. Therefore, we know that k must equal -2.