How many lines can pass through the point by x=2 and y=9?
only one
two
three
infinitely many
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Answer:
Infinite. And I don't mean the same line over and over, I mean infinite, different lines with different slopes passing through the same two points.
I was thinking about this last night as I couldn't sleep. So how does this work?
By folding the axis through the dimension above. So, because it will be harder to imagine in a cartesian, three dimensional axis, you can imagine it in a one dimensional axis (you need at least one dimension as you have two points) and then fold one point to the second dimension and connect that point to your other point through another straight line.
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