Algebra 2 five questions. Help?!

Question

Hanna · Answer

attachment

Hero · Answer

In other words, for what intervals is the function above the $x$ axis?

Hanna · Answer

Would it be...?
(−4, 0)
(0, 6)

Hero · Answer

(-4,0) is correct. There's one other interval that is also correct. Can you figure out which one that is?

Hero · Answer

For the interval $(0,6)$ is the graph above or below the $x$ axis?

Hanna · Answer

above

Hero · Answer

Explain how the graph is above the $x$ axis on interval (0,6).

Hanna · Answer

Well actually I'm not sure because it's on the 0 x axis line so it's both.

Hanna · Answer

And I don't understand how to find this... (6, 8]

Hero · Answer

Pay not attention to what is on the x axis. Only what is ABOVE the x axis.

Hero · Answer

Let me help you out.

Hanna · Answer

Oh would it be [−6, −4)?

Hero · Answer

|dw:1553890360234:dw|

Hero · Answer

Above the x-axis implies POSITIVE. Below the x-axis implies NEGATIVE btw

Hanna · Answer

Oh okay. That picture helps a lot. Thank you!

Hero · Answer

Ignore the parentheses I wrote though. I got some of those wrong. But you get the idea.

Hanna · Answer

Okay :)

Hero · Answer

I don't have time to help you with everything sorry. I got my own work to do. Good luck.

Hanna · Answer

Oh okay, thank you. You helped a lot!!