E.g.

f(x) =

{ 0, x<0 {x +1, 0<=x<=2 {x^2, x>2

So in the region to the left of the point x=0, your graph is a straight horizontal line

* in the region 0<=x<=2, graph a straight line from the points (0,1) to (2,3) * in the region x>2, graph the parabola.

Note that piecewise functions may not “join” at their endpoints and this is perfectly ok. i.e at x=0 the function above jumps from the point (0,0) to (0,1).

Also, don’t forget that the circles you will draw at each endpoint will either be coloured-in (indicating x=, <= or >= situation) or empty (indicating either a x< or x> situation).

Hope that makes sense :p