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# Rockbox mail archive

From: Mike Holden <rockbox_at_mikeholden.org>
Date: Mon, 14 Jan 2008 08:56:36 -0000 (UTC)

Jerry Van Baren wrote:
> While power consumption is proportional to clock rate, it isn't
> necessarily *linearly* proportional

But that's precisely what "proportional" means - linearly proportional!

To be proportional, the two values have to be always at exactly the same
ratio, such as y = x * 2.

"proportional" from dictionary.com:

4. Mathematics. a. (of two quantities) having the same or a constant ratio
or relation: The quantities y and x are proportional if y/x = k, where k
is the constant of proportionality.
b. (of a first quantity with respect to a second quantity) a constant
multiple of: The quantity y is proportional to x if y = kx, where k is the
constant of proportionality.
```--
Mike Holden
http://www.by-ang.com - the place to shop for all manner of hand crafted
items, including Jewellery, Greetings Cards and Gifts
```