SOLUTION: Concept Check for Week 4: explain in your own words why the line x = 4 is a vertical line.

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Question 175627: Concept Check for Week 4: explain in your own words why the line x = 4 is a vertical line.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
In MY own words,
x=4 is a vertical line because, since
y is not even mentioned, then y can
be anything I want it to be, but x can
never be anything but 4. There is no other
line except a vertical one that can fill these
2 requirements