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This document explores the relationship between a quadratic function and its derivative. The function is expressed as f(x) = x² - 7. By calculating its derivative, we find that f'(x) = 2x, which gives the slope at any point x. Specifically, at x = -3, the slope f'(-3) is evaluated to be -6. Using this slope and a point on the curve, the equation of the tangent line is derived in the form y = -6x - 16. The analysis highlights the importance of derivatives in understanding the behavior of functions.
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