Consider the function f(x)=sqrt(x) and the point P(4,2) on the graph of f?
-Consider the graph f with secant lines passing through p(4,2) and Q(x,f(x)) for x-values 1, 3, and 5.
-Find the slope of each secant line
-Use the results to estimate the slope of the tangent line to the function at p(4,2). Describe how to improve your approximation of the slope?
I already graphed the function with the x values for 1, 3, and 5 but I'm confused on how to do the rest. Any help is greatly appreciated!