Let f(x) = x - 2x. (A) Find the slope of the secant line joining (2,...
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Let f(x) = x - 2x. (A) Find the slope of the secant line joining (2, f(2)) and (9,f(9)). Slope of secant line = 9 (B) Find the slope of the secant line joining (4, f(4)) and (4 + h,f(4 + h)). Slope of secant line = 63/2 (C) Find the slope of the tangent line at (4, f(4)). Slope of tangent line = 0 (D) Find the equation of the tangent line at (4, f(4). y = Let f(x) = x - 2x. (A) Find the slope of the secant line joining (2, f(2)) and (9,f(9)). Slope of secant line = 9 (B) Find the slope of the secant line joining (4, f(4)) and (4 + h,f(4 + h)). Slope of secant line = 63/2 (C) Find the slope of the tangent line at (4, f(4)). Slope of tangent line = 0 (D) Find the equation of the tangent line at (4, f(4). y =
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