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The ___ of a parabola is the line, along with a point not on the line, which is used to generate a parabola.

User Soerface
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Answer:

Directrix

Explanation:

The directrix of a parabola is the line, along with a point not on the line (which is the focus), which is used to generate a parabola. The directrix is parallel either to the x- or y-axis, and is perpedicular to the parabola's axis of symmetry (at x = h).

Therefore, the correct answer is "directrix."

User Sanchitos
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