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Willian's line follows the law (where b = A constant representing the shape of the Willian's line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

I.P. = a x m + b
m = a + b x I.P.
I.P. = b x m + a
m = b/I.P. - a

Correct Answer: m = a + b x I.P.

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