Conic Sections: Parabolas Answers

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This parabola opens , so the standard form of the equation for this parabola is

upward

downward

to the left

to the right

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Option

The equation of the directrix is , and the focus is (, ). This means that p =

x = –2

= 2

y = 2

y = –2

The equation of the parabola is

Option

The equation of the parabola is .

y² = –8x

y² = 8x

x² = 8y

x² = -8y

Find the equation of the parabola with its vertex at the origin and focus at (–3, 0).

Option

The standard form for this parabola is

Option

What is the value of p?

–2

Option

The antenna feed should be placed .

½ inch above the vertex

½ inch below the vertex

½ inch to the right of the vertex

½ inch to the left of the vertex

The directrix for a parabola with a standard form of (y − k)2 = 4p(x − h) is

y = k – p

y = h – p

= k – p

x = h – p

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