just plug this into the formula for the difference quotient.

plug in x = 1 and h = 0.01 above and solve.B.) Find the equation for the secant line at x = 1 with h = 0.01

this gives you the slope of the secant line, thus it is your m in the equation for the line, y = mx + b

the line passes through the point (1,4). (plug in the x-value into f(x) to find the corresponding y-value) you can now find the equation of the line

see here for two methods on finding the equation of a line given the slope and a point.