SOLUTION: A linear equation, x = 5, is a horizontal line of a plane. true or false?

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Question 508519: A linear equation, x = 5, is a horizontal line of a plane. true or false?
Found 2 solutions by swincher4391, Alan3354:
Answer by swincher4391(1107) About Me  (Show Source):
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False, it is vertical. In fact, all "functions" where you have x = ? are vertical lines because their slopes are undefined. If you think about the definition of slope, it is (change in y / change in x). Since our x value is fixed, then the change in x is 0, right? Then we have division by 0, and so we result in a vertical line, which isn't a function since it obviously does not pass the vertical line test.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x = 5 is a line parallel to the y-axis. That's usually called vertical, so it's false.