{"page":"\n\n
\n
\n
\n
\n
\n\nVideo\n
\n

\nHow to find the directrix, focus and vertex of a parabola\n

\n
\n
\nGet Free Access for 10 Days!\n
\n
\n
\n
\n
\n
×
\n\n\n
\n\nPublisher:\n\nBrian McLogan\n\n\n
\n
\nLearn how to graph a vertical parabola. A parabola is the shape of the graph of a quadratic equation. A parabola is said to be vertical if it opens up or opens down. A vertical parabola results from a quadratic equation in which the x...\nLearn how to graph a vertical parabola. A parabola is the shape of the graph of a quadratic equation. A parabola is said to be vertical if it opens up or opens down. A vertical parabola results from a quadratic equation in which the x part of the equation is squared. To sketch the graph of a parabola, we first identify the vertex, the focus and the directrix. To do this, we first write the equation in the form (x - h)^2 = 4p(y - k), where (h, k) is the vertex and p is the distance between the vertex and the focus. After expressing the equation in the form (x - h)^2 = 4p(y - k), the vertex is given by (h, k), the focus is given by (h, k + p) and the directrix is given by the line y = k - p. After obtaining the vertex, the focus and the directrix, we can then sketch the parabola.\n
\n
\n\n
\n
\n
\n
\n

Resource Details

\n
\n
\n
\n
Curator Rating
\n
\n
\n
\n
\n
\n
Educator Rating
Not yet Rated
\n
\n
\n
\n
\n
Media Length
\n
11:46
\n
\n
\n
\n
\n
Grade
12th - Higher Ed
\n
\n
\n
\n
\n
Subjects
Math
1 more...
\n
\n
\n
\n
\n
Media Type
Instructional Videos
\n
\n
\n
\n
\n
Source:
\n
\nBrian McLogan\n\n
\n
\n
\n
\n
\n
Date
\n
2012
\n
\n
\n
\n
\n\n
Language
English
\n
\n
\n
\n
\n
Audiences
For Teacher Use
2 more...
\n
\n
\n
\n
\n
Usage Permissions
Fine Print: Educational Use
\n
\n
\n
\n
\n
\n

Additional Materials

\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Transcript\n
\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Preview\n
\n
\n
\n

Concepts

\n
\n
vertex, vertical, horizontal, parabolas, distance, conic sections
\n
\n\n\n
\n
\n
\n
\n

Additional Tags

\n
\n
directrix, parabola, math tutorial, find the vertex focus and directrix of the parabola, parabola finding vertex focus and directrix, find vertex focus and directrix of parabola, how to find the directrix of a parabola, directrix and focus of a parabola, how to find the vertex focus and directrix of a parabola, vertex focus directrix parabola, how to determine focus and vertex of parabola, brian mclogan, free math videos, math, mathematics, learn how, focus, vertical axis, standard equation, important points, vertical parabola, axis, equals, equation, points, form, 1 half, number, means, point, problem, squared, find, graph, thing, guys, write, remember, working
\n
\n\n\n
\n
\n
\n
\n

Classroom Considerations

\n
Best For: Explaining a topic
Video is ad-free
\n
\n
\n

Educator Ratings

\n
\n
\n
\n
\n
\n\nShow resource details\n
\n
\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: How to find the directrix, focus and vertex of a parabola\" href=\"/subscription/new\">\"How\n\n
\n
\n
\n\n\n\n"}