
Concept explainers
To find:The

Answer to Problem 54E
The quadratic equation in the standard form is
Explanation of Solution
Given information:
The y increases as x increases when x< 4; y decreases as x increases when x> 4.
Formula used:
Calculation:
The axis of symmetry of a quadratic function with equation of the form
In the given function, the behaviour of the graph changes at x=4. This means that the axis of symmetry x=4.
The value of any parabola whose graph opens downward and whose axis of symmetry is x=4 will satisfy the given conditions
This means that any quadratic function whose equation is of the form
Therefore one quadratic function that satisfies the given conditions is:
On Converting this to standard form gives:
The graph of the given function is:
Conclusion:
The quadratic equation in the standard form is
Chapter 8 Solutions
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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