The ages (in years) of nine children and the number of words in their vocabulary are given in the following table. Age, x Vocabulary size, y 3 4 5 5 6 3 4 7 1100 1300 1500 2100 2600 3600 1200 310 Find the equation of the regression line for the given data. (a) = 138.5968x-34.5612 (b) = 607.5x-1130.8333 8 3810 (c) =510.7895x-504.4737 (d) y=114.58x+1373.75

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