21 Let f(x) x The slope of the tangent line to the graph of f(x) at the point The equation of the tangent line to the graph of f(x) at (- 5, m and b= Hint: the slope is given by the derivative at x = f(-5+h)-f(-5) h lim h→0 - 5, ie. 5, 21 5 27/1) is 5 is y = mx + b for Get a common denominator in the numerator and it will then be able to eliminate the h from the denominator.

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