Concept explainers
To identify: The given equation. If it is a parabola, give its vertex, focus and the directrix.
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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