How do I find slope and intercept in part a of question 7 Use the following phas

Question

How do I find slope and intercept in part a of question 7

Use the following phase diagram for questions 7 and 8. The following phase diagram for the procesing of a polymer relates the applied pressure to the raw material porosity. Region A or B- porosity is too high or too low for the material to be usable. . Region C combinations in this region yield material with defects, such as cracking or flaking. Region D below a pressure of 15 pound-force per square inch [psi] the polymer cannot be processed . Region E optimum region to operate. 1.0 0.85 Porosity Region A 08

Explanation / Answer

End points of the line separating region C and region E are given in the chart.

slope can be calculated as: (Y2-Y1)/(X2-X1) = (0.85-0.15)/(33-15) = 0.60/18 = 0.033.

the intercept can be given as: Y1-slope*X1 = 0.15 - 0.033*15 = 0.15 - 0.50 = -0.35

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