Conic Sections: Parabolas Answers

Which is the directrix of a parabola with equation ?

Which is the standard form of the equation of a parabola with a focus of (0, –3) and its vertex at the origin?

Franco is adjusting a satellite because he finds it is not focusing the incoming radio waves perfectly. The shape of his satellite can be modeled by , where x and y are modeled in inches. He realizes that the static is a result of the feed antenna shifting slightly off the focus point. What is the focus point of the satellite?

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

Which is the standard form of the equation of the parabola that has a vertex of (–4, –6) and a directrix of y = 3?

Which is the standard form of the equation of the parabola shown in the graph?

Deanna is adjusting a satellite because she finds it is not focusing the incoming radio waves perfectly. The shape of her satellite can be modeled by , where x and y are modeled in inches. She realizes that the static is a result of the feed antenna shifting slightly off the focus point. What is the focus point of the satellite?

Mustafa is adjusting a satellite because he finds it is not focusing the incoming radio waves perfectly. The shape of his satellite can be modeled by , where x and y are modeled in inches. He realizes that the static is a result of the feed antenna shifting slightly off the focus point. What is the focus point of the satellite?

Which is the focus of a parabola with equation ?

A parabola opens to the left. Which could be the equation of the parabola?