alleryThe equation y² = 4ax represents a PARABOLA with:
AFocus at (0, a) and directrix y = -a (vertical)
BFocus at (a, 0) and directrix x = -a
CFocus at the origin (0, 0) always
DFocus at (4a, 0) and directrix x = 0
Answer & Solution
Correct answer: B. Focus at (a, 0) and directrix x = -a
y² = 4ax: opens to the RIGHT.
Focus at (a, 0), directrix x = -a (vertical line).
Latus rectum length = 4a.
For y² = -4ax (opens left), focus at (-a, 0).
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