About: http://webisa.webdatacommons.org/353177240

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	In the xy plane, the line x+y=k, where k is a constant, is tangent to the graph of y=x^2+3x+1.
http://www.w3.org/ns/prov#wasQuotedFrom	openstudy.com