C=5 (F−32)
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The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true?
A temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of
5 degree Celsius.
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A temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.
A temperature increase of
5 degree Fahrenheit is equivalent to a temperature increase of 1 degree Celsius.
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A) I only
B) II only
C) III only
D) I and II only
If I read that the right way, the only one that remotely would fit the equation would be #2. So the answer is b
For now , just ignore the constant 5/9 *32
c = 5/9 f when f changes 1 c changes 5/9 so A is true
when f changes 5/9 c changes 25/81... not 1 so C is untrue
(as an aside when f changes 9/5 c changes 1 )
re-arrange
9/5c = f when c changes 1 f changes 9/5 or 1.8 so B is true
D) I and II only