How To: Sketch the graph of a piecewise function

This video teaches us to draw the graph of a piecewise function. This is shown using two examples. In the first example we have 'y' equal to 'x + 2' for x less than zero and '1 - x' for x greater than equal to zero. We plot two points on the function for x less than zero and do the same for the function with x greater than equal to zero. The graph for the first function is erased for x greater than equal to zero, and the same is done for the second function for x less than zero. Note that the point x=0 lies on the second function and this is the point of the break in the graph. The second example consists of a parabola and a line. Both of these are plotted for their respective values of x, and the break is made in the similar way to the first example.