About: http://webisa.webdatacommons.org/18451335

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	We can test if a point is on a line or not by plugging it into the equation.
http://www.w3.org/ns/prov#wasQuotedFrom	ck12.org