LINEAR EQUATIONS

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Instead of memorizing the formulas for Centigrade to Fehrenheit ----

why not use the fact that there exists
a linear relationship.
By forming the ordered pairs for

the Freezing and Boiling
Temperatures for WATER we get:

(0 , 32) and (100 , 212)

OR
(32 , 0 ) and (212 , 100)

Depending on which pair you use,

the slope will be either 9/5 or 5/9