Assertion: function's graph | /r/CapableOf | lie above the x-axis
Facets:
value: always
type: DEGREE
Source sentences:
text: The graph always lies above the x-axis but becomes arbitrarily close to it for large negative x; thus, the x-axis is a horizontal asymptote.
text: The graph always lies above the x-axis but can get arbitrarily close to it for negative x; thus, the x-axis is a horizontal asymptote.