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Guys I need help with this question, I have some marked but i have no idea which ones are the correct ones to begin with...

Guys I need help with this question, I have some marked but i have no idea which ones are the correct ones to begin with...
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Guys I need help with this question, I have some marked but i have no idea which ones are the correct ones to begin with...

Guys I need help with this question, I have some marked but i have no idea which ones-example-1
User Sampo
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The first two are the same, and both are correct.

A vertical directrix means that the parabola is opening around an axis of symmetry that is parallel to the x axis. In this case it is the x axis. The minus sign indicates that it opens left.
User IsaacLevon
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