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Question

Which of the curves in figure represents the relation between Celsius and Fahrenheit temperatures

  1. 1    
  2. 2    
  3. 3    
  4. 4    

The correct answer is: 1


    fraction numerator C over denominator 5 end fraction equals fraction numerator F minus 32 over denominator 9 end fractionÞC equals open parentheses fraction numerator 5 over denominator 9. end fraction close parentheses F minus fraction numerator 20 over denominator 3 end fraction. Hence graph between °C and °F will be a straight line with positive slope and negative intercept.

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