# K=Constant of variation...Why "K" not "C"?

Ok so I asked my algebra teacher why The Constant of variation was "K" not "C"...I need to know why!

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• Anonymous

Because from time to time you'll end up with a variation that includes a constant offset. Constant offsets are indicated by c, by convention. Here, "convention" means "there's no real reason for it, but everyone does it the same way". To avoid confusion with the constant offset c, we typically use k for the constant of variation. Again, it's conventional.

By the way - other countries, including some English-speaking ones, use other letters.

• Anonymous

The symbol for Magnetism Magnitude is T, why isnt it M? (it represents Tesla, named after the scientist)

The symbol for Displacement is r. Why isnt it D?

The symbol for Current is I. Why isnt it C?

Its just the way it is.

Source(s): Physicist
• 4 years ago

I have come across suggestions that it is from the German konstante, but I haven t been able to find a respectable source for that.