Problem:
Find the distance from the point ${-\frac{23}{7}, -3}$ to the line $-\frac{x}{7}+\frac{y}{7}-3=0$.
Answer:
$\frac{145}{7 \sqrt{2}}$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/point_to_plane_distance/16007.txt'}