Continuous/discontinuity

Can someone please tell me how to make this determination?

1/x(x-3) x=0,x=-4
is the function con @ x=3
is the function con @ x=0
is the function con @ x=-4

Try to see what the value of the function is on each side of the test point. For instance, on the 3 point, test it at 2.9 and at 3.1 thence closer. Is the function approaching the same point?

Graphing it on your calculator may be easier.