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Concept explainers
To identify: The given equation. If it is a parabola, give its vertex, focus and the directrix.
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Answer to Problem 1RE
The vertex of the parabola
The focus of the parabola
The directrix of the parabola
Explanation of Solution
Definitions used:
The standard equation of a parabola with vertex
Calculation:
Rewrite the equation
This equation is in the form of
So, the given equation is parabola.
Therefore, the vertex of the parabola
Compare
Here, the value of a is 4.
Therefore, the focus of the parabola
As
Thus, the directrix of the parabola
Therefore, the vertex of the parabola
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Chapter 7 Solutions
College Algebra Enhanced with Graphing Utilities (7th Edition) (Sullivan Enhanced with Graphing Utilities Series)
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