Answer the questions based on the graph of $y = f(x)$ shown above.

If you are having a hard time seeing the picture clearly, click on the picture. It will expand to a larger picture on its own page so that you can inspect it more clearly.

a) $f$ continuous at $-2$.

b) $f$ continuous at $-1$.

c) $f$ continuous at $0$.

d) $f$ continuous at $1$.

e) $f$ continuous at $3$.

f) $f$ continuous at $4$.