<PRE><B>Question 341719</B>
Suppose that a bridge has a gap of 1.3 cm at 22 degrees, and .9 cm at 30 degrees. Write an equation for gap width as a function of temperature.
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You have two points relating gap to timperature.
(22,1.3) and (30,0.9)
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slope = (0.9-1.3)/(30-22) = -0.05
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Form: g = m*t + b
0.9 = -0.05*30 + b
b = 2.4
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Equation:
gap = -0.05(temp)+2.4
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Cheers,
Stan H.</PRE>