The Linux paradox
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That's an f(x) = x when it should be an f(x) = x - 1000.
f(x) = x
f(x) = x - 1000
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You can’t say that, if you don’t see the scale!
f(x) = x - a 🙂
f(x) = x - a
Better 😁
Why are you assuming that the y scale doesn't start at -1000?
Because you can clearly see the X axis?
The placement of the x axis says nothing about the values on the y axis. By convention it's often placed at y=0, but plenty of plots make this impossible or impractical or simply not desired.