Conic Sections: Parabolas - Quiz Quiz

Question 1

Which is the directrix of a parabola with equation x squared is equal to 4 y ?

Revolt · Accepted Answer

C: y is equal to negative 1

Question 2

Which is the focus of a parabola with equation y squared is equal to 4 x ?

Revolt · Accepted Answer

B: open paren 1 comma 0 close paren

Question 3

Which is the directrix of a parabola with equation x squared is equal to 8 y ?

Revolt · Accepted Answer

C: y is equal to 2; D: y is equal to negative 2

Question 4

What are the vertex, focus, and directrix of the parabola with the equation x squared plus 8 x plus 4 y plus 4 is equal to 0 ?

Revolt · Accepted Answer

D: vertex  open paren negative 4 comma 3 close paren ; focus  open paren negative 4 comma 2 close paren ; directrix  y is equal to 4

Question 5

Which is the standard form of the equation of the parabola that has a vertex of open paren negative 4 comma negative 6 close paren and a directrix of y is equal to 3 ?

Revolt · Accepted Answer

B: open paren x plus 4 close paren squared is equal to negative 36 times open paren y plus 6 close paren; C: open paren y plus 4 close paren squared is equal to 36 times open paren x plus 6 close paren

Question 6

Which is the axis of symmetry of a parabola with equation y squared is equal to negative 8 x ?

Revolt · Accepted Answer

C: y is equal to 0

Question 7

Which is the focus of a parabola with equation y squared is equal to 4 x ?

Revolt · Accepted Answer

B: open paren 1 comma 0 close paren; D: open paren negative 1 comma 0 close paren

Question 8

Which is the standard form of the equation of a parabola with a focus of open paren 0 comma negative 3 close paren and its vertex at the origin?

Revolt · Accepted Answer

A: x squared is equal to negative 12 y

Question 9

Yung is designing a flashlight that uses a parabolic reflecting mirror and a light source. The shape of the mirror can be modeled by x squared is equal to 8 y , where x and y are measured in inches. What is the focus point of the flashlight?

Revolt · Accepted Answer

A: open paren 0 comma 2 close paren; C: open paren negative 2 comma 0 close paren

Question 10

Yung is designing a flashlight that uses a parabolic reflecting mirror and a light source. The shape of the mirror can be modeled by x squared is equal to 8 y , where x and y are measured in inches. What is the focus point of the flashlight?

Revolt · Accepted Answer

C: open paren 0 comma 2 close paren

Conic Sections: Parabolas - Quiz Quiz Answers

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