Using the given data, we see the largest change in Y is between X = -8 and X = -7. Y X 19.1 0 19.1 -1 19 -2 18.8 -3 18.7 -4 18.3 -5 18.2 17.6 -7 11.7 -8 9.9 -9 9.1 -10 Determine the value of the Y at X = -7.5 using the direct method of interpolation and a second order polynomial. -6

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