Question

I need help, I have about 15 minutes before the test is over.

The graph of a function f(x) is shown below:

graph of line segment going through ordered pairs negative 3, negative 4 and 1, 2. A circle at negative 3, negative 4 and a black dot at 1, 2

What is the domain of f(x)?
−3 ≤ x < 1
−3 < x ≤ 1
−4 < y ≤ 2
−4 ≤ y < 2

Answer 1

Okay so the domain means it's asking for the points on the X-AXIS (meaning x will be in the middle) that the line exists. The open dot means that -3 does not satisfy the inequality and there's a closed dot at the other point which means that it DOES satisfy the inequality. Use this info to figure out the answer. If you need more help, i'll leave the tab open.

Answer 2

Aren't 1, -1 & -3 on the x-axis? I'm not sure how to do this, I'm actually behind in both of my classes (Algebra & Geometry) and I haven't been studying as I should and I've been trying to get caught up by getting help from other people. Which isn't the best idea, but I'm kind of far behind so I feel like I don't have the time to study.

Answer 3

Okay I'll give you the answer for your test and then explain

it's the second.

Answer 4

Thank you. And yes, an explanation would be nice. I have a feeling this will be on my next DBA, or something like this. :)

Answer 5

Okay so I made a short video (sorry for the terrible quality and my sick voice) but I'll be sending it to you as a message because I'm not sure if posting video links is against the rules here or something.
If you need me to explain better or need a clearer video or want me to do another example, just let me know! I'm happy to help :)