The closest distance is about 4 feet.
In order to find this, you can plot these two points. Once you have done so, you can create a right triangle in which the difference in x and the difference and y are the two legs. Then use the Pythagorean Theorem to find the hypotenuse (or distance between).
a^2 + b^2 = c^2
2^2 + 3^2 = c^2
4 + 9 = c^2
13 = c^2
Sqrt(13) = c = about 3.6