## Detailed description

(y − p)squared= plus or minus 4a(x − q), with a > 0, parabola with x-axis as axis of symmetry, vertex marked as (q,p), intercepts positive x-axis. Directrix marked as x = q − a, focus marked as S (q + a,p).

(y − p)squared= plus or minus 4a(x − q), with a > 0, parabola with x-axis as axis of symmetry, vertex marked as (q,p), intercepts positive x-axis. Directrix marked as x = q − a, focus marked as S (q + a,p).