Assertion: parabola's directrix | /r/HasProperty | given by the equation
Facets:
Source sentences:
text: The directrix is given by the equation.
text: + k\) with vertex \( V(h,k) \) and focus \( F(h,k+p) \) and directrix given by the equation \( y = k - p \)
text: x = \dfrac{1}{4p} (y - k)^2 + h\) with vertex \( V(h,k) \) and focus \( F(h+p,k) \) and directrix given by the equation \( x = h - p \)