An escalator lifts people to the second floor of a building, 24ft above the first floor. The escalator rises at a 30 angle. To
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ANSWER
Focus:
Directrix:
EXPLANATION
The given parabola has equation:
We compare this to the general equation,
Comparing the coefficient of x, we have:
-4p=-1
The focus is (-p,0)
The equation of the directrix is
x=p