Consider the graph of the function f (x) = x2 – x – 6. (a) Find the equation of the secant line joining the points (-1, -4), and (3, 0). y= (x+1)-4 (b) Use the Mean Value Theorem to determine a point c in the interval (-1, 3) such that the tangent line at c is parallel to the secant line. C = 1 (c) Find the equation of the tangent line through c.

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