Write the standard form of the equation of the parabola with the given directrix and vertex at (0,0).
x=3
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OpenStudy (ammarah):
@mathmale
OpenStudy (rock_mit182):
hi
OpenStudy (mathmale):
think this parabola is a vertical one or a horizontal one? How would you know?
OpenStudy (ammarah):
vertical? x or y
OpenStudy (rock_mit182):
\[y=x ^{2}\] opens vertically
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OpenStudy (rock_mit182):
the inverse opens horizontally
OpenStudy (ammarah):
what> im sop confused.....
OpenStudy (mathmale):
@rock_mit182: Thank you for your input, but please do NOT simply hand out answers. if you can help Ammarah find her own answer, fine; otherwise please stay in the background. Thank you.
OpenStudy (rock_mit182):
ok
OpenStudy (rock_mit182):
i was trying to help
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OpenStudy (mathmale):
You are given "Write the standard form of the equation of the parabola with the given directrix x=3 and vertex at (0,0)." Why not graph these? (0,0) is just a point. The directrix is a line. Is this line vertical or horizontal?
OpenStudy (mathmale):
@Ammarah: Don't be afraid to make mistakes. But please do get involved! Draw something. Say something. We'll eventually find the answer you want.