#3 Show that f(a) = 2x2+ 4x - 6 - has a removable discontinuity at x = 1 by x - 1 (a) verifying (1) in the definition above, and then (b) verifying (2) in the definition above by determining a value of f(1) that would make f continuous at r = 1. f(1) would make f continuous at x = 1. #4 Let f(a) = 2x2 - 13x + 7 The slope of the tangent line to the graph of f(x) at the point (3, -14) is The equation of the tangent line to the graph of f(x) at (3, -14) is y = ma + b for m = and b = Hint: the slope is given by the derivative at x = 3, ie. f (3 + h) - f(3) lim h