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Conic Sections - Parabolas - Chapter 11.1, Problem 2E
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is the equation for a parabola opening vertically. We can observe from the example equation that the coefficient of y is 12
To find the p value set (This will allow you to find the focus and directrix of a parabola centered at the origin)
Now solve for p
To find the focus use the focus coordinates (0,p)
Substitute:
The focus is at (0,3)
To find the directrix use the directrix formula Substitute:
The directrix is
Keep in mind these formulas and coordinates are for finding the the directrix and focus when the parabola's vertex is at (0,0).
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Question Text | Conic Sections - Parabolas - Chapter 11.1, Problem 2E |
Answer Type | Text solution:1 |