## Intermediate Algebra (12th Edition)

$C=0^{\mathrm{o}}, F=32^{\mathrm{o}}$. $C=100^{\mathrm{o}}, F=212^{\mathrm{o}}$.
Without using any equation, we see from the picture that when $Celsius=C=0^{\mathrm{o}}, Fahrenheit=F=32^{\mathrm{o}}$. And when $C=100^{\mathrm{o}}, F=212^{\mathrm{o}}$. (The second fact is not visible in the picture, but can be looked up on another thermometer.)