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March 3, 2015

March 3, 2015

Posted by **Anon** on Monday, May 6, 2013 at 8:20pm.

- Function -
**Reiny**, Monday, May 6, 2013 at 11:12pmDraw a vertical line, calling the left side F for Fahrenheit, and the right side C for Celsius

Consider the top of the line to be the boiling point of water and the bottom the freezing point of water

On the C side, mark the top 100 and the bottom 0, (very logical)

On the F side, mark the top 212 and the bottom 32, (totally illogical)

pick any arbitrary point on the line, calling the left F and the right side C

Now create a proportion and solve it

(F - 32))/(212 - 32) = C/100

(F-32)/180 = C/100

100F - 3200 = 180C

100F = 180C + 3200

F = (180/100)C + 32

F = (9/5)C + 32

or after rearranging:

C = (5/9)(F - 32)

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