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Mathematics 19 Online
OpenStudy (ammarah):

Write the standard form of the equation of the parabola with the given directrix and vertex at (0,0). x=3

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

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

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.

OpenStudy (ammarah):

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