Mathematics

Mathematics, 23.09.2019 22:20, sipstick971

What is the defination of the focus when referring to a parabola?

answer

Answers: 1

Show answers

Similar questions

Предмет

Mathematics, 03.08.2019 13:00, sydneyyyy7014

Ido not understand : the vertex form of the equation of a vertical parabola is given by , where (h, k) is the vertex of the parabola and the absolute value of p is the distance from the vertex to the focus, which is also the distance from the vertex to the directrix. you will use the geogebra geometry tool to create a vertical parabola and write the vertex form of its equation. open geogebra, and complete each step below. if you need , follow these instructions for using geogebra. part a ( i already answer it ) mark the focus of the parabola you are going to create at f(6, 4). draw a horizontal line that is 6 units below the focus. this line will be the directrix of your parabola. what is the equation of the line? the parabola is vertical since the directrix is horizontal. the parabola opens upwards, since the focus lies above the directrix. equation of up-opening parabola is in general: y = a(x - a)² + b the vertex is halfway between focus and directrix. vertex (6, 1) a = 6 b= 1 p = distance between focus and vertex = 3 k= 1/(4p) = 1/12 so the equation of the parabola is : y = (1/12)(x - 6)² + 1 need in this part b: part b: construct the line that is perpendicular to the directrix and passes through the focus. this line will be the axis of symmetry of the parabola. what are the coordinates of the point of intersection, a, of the axis of symmetry and the directrix of the parabola?

Answers: 1

Предмет

Mathematics, 30.08.2019 03:30, selamh1999

Which of the following best describes the relationship between the focus and directrix of a parabola a. the focus is half the distance from the parabola as the directrix b. the focus is twice the distance from the parabola as the directrix c. they are equidistant from the parabola d. they both lie on the graph of the parabola

Answers: 1

Предмет

Mathematics, 23.09.2019 22:20, YODIIZ6590

What is the defination of focus of a parabola on a coordinate grid

Answers: 1

Предмет

Mathematics, 18.10.2019 19:30, reetajmahfouz3816

If the directrix of a parabola is the horizontal line y = 3, what is true of the parabola? a)the focus is at (0, 3), and the equation for the parabola is y2 = 12x. b)the focus is at (0, –3), and the equation for the parabola is x2 = –12y. c)the focus is at (3, 0), and the equation for the parabola is x2 = 12y. d)the focus is at (–3, 0), and the equation for the parabola is y2 = –12x.

Answers: 1

Do you know the correct answer?

What is the defination of the focus when referring to a parabola?...

Questions in other subjects:

Konu

Physics, 19.01.2022 04:10

To test the quality of a tennis ball, you drop it onto the floor from a height of 4.68 m. It rebounds to a height of 2.85 m. If the ball is in contact with the floor for 14.3 ms, w...

Konu

Biology, 19.01.2022 04:10

Suppose a blue eyed, furless rabbit mates with a brown eyed furry animal. All five babies in their first litter have brown eyes, but three are furry and two furless. The

Konu

English, 19.01.2022 04:10

10USE What is he A-Ha moment in "Behind Grandma's House"?...

Konu

Mathematics, 19.01.2022 04:10

wesley as $2a. If a dozen tennis balls cost $20d, find the number of tennis balls that wesley can buy (please work it out for me)...

Konu

History, 19.01.2022 04:10

Which describes Chinese landscape painting during the Song dynasty? A. paintings reflected the natural world as painters saw it. B. paintings showed humans as strong,...

Konu

Mathematics, 19.01.2022 04:10

Three packages of chicken and four cases of barbecue sauce cost $40. Five packages of chicken and two cases of barbecue sauce cost $34. What is the cost of one package of chicken a...

Konu

Computers and Technology, 19.01.2022 04:10

How do we produce quality work in editing audio?...

Konu

Biology, 19.01.2022 04:10

Which global wind belt used to help ships sail with important cargo? A. the trade winds B. the doldrums C. the polar easterlies D. the prevail...

Konu

Social Studies, 19.01.2022 04:10

True or False: A playwright's ability to write good characters is based on an ability to examine and understand people's' motivations and emotions....

Konu

Mathematics, 19.01.2022 04:10

An oak tree is located at the reflection of point B across the x-axis what ordered pair described the location of the oak tree...

Other tasks in the category: Mathematics More task