A material is tested for cyclic fatigue failure whereby a stress, in MPa, is applied to the material and the number of cycles needed to cause failure is measured. The results are in the table below. When a log-log plot of stress versus cycles is generated, the data trend shows a linear relationship. Use least-squares regression to determine a best-fit equation for thisdata.

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N. cycles 100 1000 10.000 100.000 1,000,000 925 800 10 Stress, MPa 1100 1000 925 550 420 625