For what values of x is the tangent line of the graph of parallel to the line y = x -0.5? (If there are multiple values then separate them with commas.) x = f(x) = 2x9x - 23x + 12 Let f(x)=21-x The slope of the tangent line to the graph of f(x) at the point (5, 4) is The equation of the tangent line to the graph of f(x) at (5, 4) is y = mx + b for m and b Hint: the slope at x = 5 is given by f(5+h)-f(5) h m= lim h0 If f(x) = 4x - 7x5 - 7x + 3x, find f'(x). 0