When simplified, it should be 13/14
(4,9) is in quarter I and (4,-9) is in quarter IV of the graph. (4,-9) is the point (4,9) reflected over the x-axis. they are similar bc both have 4 as their x coordinate.
Answer:
6,031 <em>using diameter, not radius</em>

Which rounds closest to
6,031
I would guess it would be
7 and -7