Question

ANSWER EXPLANATION: If you think of the equation as an equation for a line

y=mx+b

where

C=

5

9

(F−32)

 

or

C=

5

9

F−

5

9

(32)

 

you can see the slope of the graph is 

5

9

, which means that for an increase of 1 degree Fahrenheit, the increase is 

5

9

 of 1 degree Celsius. Therefore, statement I is true. This is the equivalent to saying that an increase of 1 degree Celsius is equal to an increase of 

9

5

 degrees Fahrenheit. Since 

9

5

 = 1.8, statement II is true.

 

On the other hand, statement III is not true, since a temperature increase of 

9

5

 degrees Fahrenheit, not 

5

9

 degree Fahrenheit, is equal to a temperature increase of 1 degree Celsius.

 

Answer 1

Answer D. An increase of (5/9)F is equivalent to (25/81)C increase.

Comments

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