Khan Academy
Khan Academy: Algebra: Graphing Radical Functions
Video showing how to graph a radical function by specifically choosing values for x that result in easy-to-plot values of y and then plotting the points. [10:17]
Khan Academy
Khan Academy: Algebra: Graphing Exponential Functions
Video showing how to graph an exponential function by evaluating the function for chosen values of x and plotting the resulting points. [5:32]