So here we have our lovely number
line with 0 clearly marked,
marks to indicate scale and
a positive and negative direction.
But what do the arrows at the ends mean?
How far do you think these number
lines extend on either end?
Do they extend to the arrows
as far as we want them to?
To +100 on the right and
-100 on the left?
Or do they extend on forever?
Please select one.
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