Assertion: parabola's value | /r/CapableOf | use the button
Facets:
value: in the sketch
type: LOCATION
Source sentences:
text: As we shall see in the 2nd activity below (use the button in the sketch to navigate there), the value of a only determines the dilation (enlargement or reduction) of the parabola, i.e. how much one has 'zoomed in' or 'zoomed out', and not its shape.