My dad he married my sister btw
I don't know much about cones, but here is what Google said.
Answer:
That is definitely considered plagiarism.
Explanation:
Your teacher could find the picture if they know how to trace where it originally came from since this is the internet.
I don't recommend doing so due to how much trouble and conflict it would inflict on you. Stay safe though :)
The note is D.
The curved line terminates at the second line of the staff, thus designating the letter name of a note on that line as G. As you go up, you find that you end up at the note D.
Hope that helped!