My choice to reflect this would be over the y axis. That would be (-1,3) for the bottom left hand corner on the original image.
Answer:
(I am assuming this is just approximation since there are no other numbers, just to be clear :))
Algebra: about 450 students
Geometry: about 250 students
Calculus: about 50 students
1 over 40 is the answer i hope
I'm going to assume that you're asking for the<em> equation</em> of that circle.
It's
<u>(x + 4)² + (y - 3)² = 16</u>