Explain why the function is discontinuous at the given number a. (Select all that apply.) av -
f(x) = 3 x + 3
if x # -3
a = -3
if x = -3
(-3) is undefined.
O
f(x) and lim f(x) are finite, but are not equal.
x-3t
X-+-3
f(-3) is defined and lim f(x) is finite, but they are not equal.
x→-3
lim f(x) is not finite.
lim
X-3
none of the above
Sketch the graph of the function.
у
у
10
10+
5
х
10
5
- 10
5
-10
-5