How to sketch a parabola by finding the focus and directrix

How to sketch a parabola by finding the focus and directrix

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to determine the orientation of a parabola by examining what is squared in the equation. It covers rewriting the equation in standard form, identifying the vertex, and isolating X squared. The tutorial also demonstrates how to find the focus and directrix of the parabola and concludes with graphing the parabola, showing the relationship between the vertex, focus, and directrix.

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7 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What are the two different formulas mentioned for dealing with parabolas?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How can you determine the direction in which a parabola opens?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of the vertex in the context of a parabola?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how to find the focus of a parabola given its equation.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the relationship between the focus and the directrix of a parabola?

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you derive the equation of the directrix from the vertex and the value of P?

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe the graphical representation of a parabola with its vertex, focus, and directrix.

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