Concept explainers
To describe: The error in graphing the function
Answer to Problem 20E
The error is that the formula used to find the axis of symmetry is wrong,
Correct graph is:
Explanation of Solution
Given information:
The function:
Concept Used:
Axis of symmetry of the function
Calculation:
The error is that the formula used to find the axis of symmetry is wrong,
The formula used is
Comparing the given function
First find the axis of symmetry of the given parabola:
So, the x -coordinate of the vertex is -2. Now use the given function to find the y -coordinate of the vertex.
So, the vertex is
The y -intercept of the graph of the given function is given by the constant term of the function.
Because
Thus, the point
Since
Now, draw a smooth curve passing through the points
The graph of the given function is:
Chapter 8 Solutions
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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