Assertion: parabola's vertex | /r/AtLocation | the lowest point
Facets:
value: on the graph
type: LOCATION
value: in this instance
type: TEMPORAL
value: for a parabola
type: TRANSITIVE-OBJECT
Source sentences:
text: For a parabola that opens upward, the vertex occurs at the lowest point on the graph, in this instance, [latex]\left(-2,-1\right).[/latex]