Question

The topic is Domain and Range Introduction. I don't know much about graphs. My teacher just dropped this off with no explanation or lesson before hand. So I have no idea what's going on.

Answer 1

According to the given graph, the function goes from x = 1 to x = 4.

Remember that x-values form the domain.

Therefore, the domain interval would be

$\lbrack1,4)$

Or

$1\leq x<4$

Because the left limit is closed and the right limit is open.

In words, the domain is more than or equal to 1 and less than 4.