directrix line parabola (1 Viewer)

[DepressedPenguino]

Do we draw the directrix as a dotted line or solid line?

 

[astroman]

Would suggest dotted, but u can do either if u label it

 

[keepLooking]

I don't think it matters. If you label it.

 

[DepressedPenguino]

Hmm..

 

[Crisium]

Do a hard line and label it

Dotted line is for asymptotes by convention