Final answer:
In mathematics, the concept of proportionality means two quantities maintain a constant ratio. Converting degrees Celsius to degrees Fahrenheit involves multiplication by 9/5 and then addition of 32; this addition breaks the proportionality. Therefore, degrees Celsius and Fahrenheit are not proportional.
Explanation:
In mathematics, two quantities are considered proportional if they maintain a constant ratio. This means that if you multiply one quantity, the other quantity also increases or decreases by the same factor.
When converting from degrees Celsius to degrees Fahrenheit, you multiply by a factor of 9/5 (or 1.8) and then add 32 degrees. Even though you are multiplying by a consistent factor (1.8), the addition of 32 breaks the rule of proportionality.
In other words, a one degree increase in Celsius does not result in a consistent increase in Fahrenheit due to the addition of 32, so degrees Celsius and degrees Fahrenheit are not proportional.
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