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You're in a firing squad. The squad knows that there is a term for the WIDTH of how far they can shoot as well as a different term for the LENGTH, or DISTANCE. One of the men thinks the terms domain and range would work, but can't remember which is which! Which is domain, width or length? Which is range?
What is:
Domain would be width (horisontal, on the x-axis.)
Range would be length (vertical, on the y-axis)