For each of the given functions, (a) find the slope of the tangent line to the graph at the given point; (b) find the equation of the tangent line. (See Examples 1 and 2.) 2 5. f(x) = x + 3 at x= = 2 6. g(x) = 1 - 2x2 at x = -1 7102 - 7. h(x) = at x = 3 X