For a sample of 8 employees, a personnel director has collected the following data on ownership of company stock, y, versus years with the firm, x. 12 14 6 19 13 15 19 Y 300 408 560 252 288 650 630 522 (a) Determine the least squares regression line and interpret its slope

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A: or you can use Heron's Formula to find the area of the triangle.

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A: Note :  1. Corresponding angles are equal. 2. Alternate exterior angles are equal.

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Q: -------

A: topic - unit circle

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A: First factor the equation